316 0 obj <>stream But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. PART 2: Video Activity . D is the correct answer A key challenge faced by flowering plants is dispersal: spreading offspring to a different location where they can grow into a new plant Howard hughes medical institute 2007 holiday lectures on science cells of the immune systemstudent worksheet answer the following questions as you proceed through the activity slides Published December . In this activity, students work with authentic research data to explore the impact of poaching on African elephants. hbbd```b``"WHg -,^ But the proportion of tuskless elephants has increased in some populations. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. endstream endobj startxref Women who are affected by the syndrome survive, but they typically have altered tooth morphology. Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Why no tusks? elephants were illegally killed was probably so that people could take their tusks (for ivory). (The first six weeks, as well as the culminating project . This pattern suggested to the researchers a sex-linked genetic origin for what they were seeing. BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. Shane Campbell-Staton of Princeton University, co-lead author of the new paper, has spent his career studying the ways that humans force such evolutionary changes across the tree of life. The accompanying worksheet guides students exploration. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, The Genetics of Tusklessness in Elephants | HHMI BioInteractive Video biointeractive 2 years ago The Day the Mesozoic Died: The Asteroid That Killed the Dinosaurs HHMI BioInteractive. Keep up with the latest from BioInteractive! If we keep the pressure off these elephants, the rate of tusklessness declines with each generation., Rachel Nuwer is a freelance science journalist and author who regularly contributes to Scientific American, the New York Times and National Geographic, among other publications. 293 0 obj <>/Filter/FlateDecode/ID[<9453723FF87E8A44A337DAA0866B88AA><438003D2AD6765408BCD5AC475C7220B>]/Index[254 63]/Info 253 0 R/Length 160/Prev 292343/Root 255 0 R/Size 317/Type/XRef/W[1 3 1]>>stream The following statement reflects our current and specific actions. Knowledge awaits. Discover world-changing science. A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. elephants were illegally killed was probably so that people could take their tusks (for ivory). %PDF-1.5 % Biology 101 Spring 2020 Selection for Tuskless Elephants modified from HHMI BioInteractive PART I: Introduction and Pre-Video Activity A survey of African savanna elephants revealed that populations declined by 30% between 2007 and 2014. Poole, who is a co-author on the new paper, combed through old natural history films and amateur videos to estimate the prevalence of tusklessness prior to the war. The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. Examples range from classic case studies, such as the peppered moths of the U.K. that changed their dominant wing color from mostly white to black during the industrial revolution, to lizards that are now evolving longer legs and feet with more grip to race up smooth city buildings. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. Tusklessness, according to a new paper in Science, can be attributed in large part to a dominant mutation on the X chromosomea genetic change that also explains the sex skew Poole saw. But why werent there any tuskless males?. Tusklessness, according to a new paper in Science, can be attributed in large part to a dominant mutation on the X chromosome a genetic change that also explains the sex skew Poole saw. Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. HS-LS4-2, HS-LS4-3, HS-LS4-4, HS-LS4-5; SEP1, SEP5, SEP6, EVO-1.E, EVO-1.G, SYI-2.B, SYI-3.D; SP3, SP4, SP5, SP6, Topic(s): 2.1, 2.6, 9.10 Thanks for reading Scientific American. Explain how characteristics associated with biological sex may affect athletic performance. Suggest some ways to reduce the number of elephants that are illegally killed each year. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? HS-LS1.A, HS-LS1.B, HS-LS3.B, HS-LS4.ASEP6, SEP8, IST-1.P, IST-1.J, IST-2.E, IST-4.A; SP1, SP2, SP4, SP6, IB Environmental Systems and Societies (2017), Teaching an Online Introductory Biology Lab Using Cellular and Molecular Biology Resources, Desktop App - macOS 10.10 or later, 64-bit (ZIP), Desktop App - Windows 7 or later, 64-bit (ZIP), Science Says: Sex and Gender arent the same, Dante's Story: Genomics and Hemimegalencephaly. !: H3d -:Cg Zf d1 The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the striking observation that many female elephants lack tusks. As you watch the videos, complete the questions from the "Task 1" handout. Explain how the selective pressures on a population may impact the frequencies of phenotypes. Key Concepts. This video follows the work of researchers conducting the first census. Selection for Tuskless Elephants. endstream endobj startxref 482 0 obj <>stream Continue reading with a Scientific American subscription. IB Environmental Systems and Societies (2017). The immune system responds to pathogens in two main ways: innate and adaptive immune responses. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. Using those samples, they identified candidate regions in the genome that, when mutated, seemed to explain tusklessness and its apparent male lethality. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer. This video presents an intriguing phenomenon: two patients who carry the same genetic variation, which is known to cause sickle cell disease, have very different outcomes. 3. a. The human immune system is made up of many cells, organs, and tissues. Analyzing Data on Tuskless Elephants. Watch the . This interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history. We know we have a lot of work to do to address racial inequities in science teaching. Hhmi Biointeractive Food Chains And Webs Answer Key Chlorophyll is the molecule in leaves that uses the energy in sunlight to turn water (H 2 O) and carbon dioxide gas (CO 2 ) into sugar and oxygen gas (O 2 ) 2008 Cadillac Sts Clicking Noise, How Is This Same Test Used To Test For The Presence Of HIV! Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. In 1989, when elephant ethologist Joyce Poole began carrying out surveys of three East African elephant populations to understand the impact that heavy poaching was having on them, she quickly noted several stark trends. This interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history. Analyze quantitative data in order to make predictions based on evidence. Video Activity 7. Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. Students will then analyze data to investigate the impact of human activity, namely poaching, on elephant populations. Describe how biological sex and gender differ from each other. 0 Not all downloadable documents for the resource may be available in this format. Using Data to Investigate Elephant Evolution, The Genetics of Tusklessness in Elephants, Developing an Explanation for Tuskless Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots. This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the observation that many female elephants lack tusks. eaht``wC(#U]}I)C Description This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the striking observation that many female elephants lack tusks. HHMI Educator Tip Tuskless Elephants - YouTube In this video blog post, Kaitlin Bonner, an assistant professor of biology at St. John Fisher College in Rochester, NY, explains how she uses. As poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants born tuskless has begun to decrease. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. By watching segments of this video, students will follow the analyses and discoveries of Joyce Poole, a scientist who has studied elephants for many years. Lessons. As of 2014, about 350,000 savanna elephants were living in Africa. If you're interested in using facilitated discussions to promote scientific literacy and empower students to make evidence-based decisions, this article from professor Holly Basta details how she restructured her course to promote student questioning and talk. The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. Anatomy & Physiology Scientific Skills & Literacy Click & Learn High School General High School AP/IB College Selection for Tuskless Elephants Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so there is a strong natural selection for having tusks. video until time 1:46 and answer the following questions. Introduction In this video, Poole explains a possible reason. Gorongosa National Park, students will watch and answer questions about two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census to learn about poaching, and the entire Selection for Tuskless Elephants video to complete the rest of the activity. It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. %PDF-1.6 % One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. Campbell-Staton was just as perplexed by this as Poole had been, and he soon struck up a collaboration with her and other elephant ecologists. In Gorongosa National Park, Poole found that among the older female elephants that survived a period of heavy poaching in the park, over 50% are tuskless. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. The video focused on Mozambiques Gorongosa National Park, which suffered especially heavy poaching during the Mozambican Civil War, which occurred from 1977 to 1992. Description. The added information provided at pause points within the animation How We Get Our Skin Color allows for a richer exploration of the topic of human skin structure and function. endstream endobj 416 0 obj <. Additionally, disruptions to the same region of the X chromosome in humans is associated with a syndrome that usually causes male fetuses to abort in the second trimester. This tool can be used to add pause points, questions, and labels to any BioInteractive video. By watching segments of this video, students will follow the analyses and discoveries of Joyce Poole, a scientist who has studied elephants for many years. Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 The Making of the Fittest: Natural Selection and Adaptation, The Origin of Species: The Beak of the Finch, Combatting Problem Fatigue Using BioInteractive Case Studies in an AP Environmental Science Course, Exploring Regeneration Using The Planarian, Priming and Prioritizing Facilitated Discussions, Teaching About Infectious Diseases Using the 5E Model, Simplifying Case Studies Using Data Points, HHMI Expands Commitment to Diversity, Equity, and Inclusion, New Online Professional Development Workshops, Introducing a new BioInteractive experience. Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! video until time 1:46 and answer the following questions. To learn more about the problems facing African elephants and their recovery in Gorongosa National Park, watch these two BioInteractive Scientists at Work videos: the first minute of The Great Elephant Census and all of Selection for Tuskless Elephants. This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. a. Propose a claim supported by scientific evidence to answer a research question. Describe how mutations in a variety of genes can affect the development of internal and external sex characteristics. Please see the Terms of Use for information on how this resource can be used. This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. II. In this video, biologist Shane Campbell-Staton walks through the steps of collecting DNA samples from elephants in Gorongosa National Park and how he plans to analyze their DNA sequences.For more information and related materials, visit HHMI BioInteractive:https://www.biointeractive.org/classroom-resources/genetics-tusklessness-elephants Poaching tips scales of elephant evolution, The Genetics of Tusklessness in Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots, Using Data to Investigate Elephant Evolution, Developing an Explanation for Tuskless Elephants, Moth Mimicry: Using Ultrasound to Avoid Bats. In Gorongosa National Park, Poole found that among the older female elephants, who survived a period of heavy poaching in the park, over 50% are tuskless. Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. Many families lacked older femalesand many of those females had no tusks. Provide evidence-based reasoning that uses available data to support a scientific claim. Watch the . For context, this course consisted of a three-credit lecture and a one-credit lab. This study is among the first to show that selective killing of large vertebrates can have a direct impact on evolutionary change, says Fanie Pelletier, an ecologist at the University of Sherbrooke in Quebec, who co-authored a perspective piece in Science about the research. View details . Instead of having sons and daughters at an equal proportion, tuskless mothers gave birth to daughters roughly two thirds of the time. Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. hb```lJB Using Pooles database, they further confirmed that, with a single exception, female elephants with two tusks had never been observed to have a tuskless baby. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. To prevent his AP Environmental Science students from having "problem fatigue," Florida educator Scott Sowell focuses on how environmental solutions are developed, justified, implemented, and evaluated. This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. This is a beautiful study that is certain to become a textbook example of how intense human exploitation of wildlife can rapidly change the natural world, says Jeffrey Good, a mammalian evolutionary geneticist at the University of Montana, who was not involved in the research. II. Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. More than 30 years later, she finally may have her answer. In particular, they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants. The Google Drive folder is set as View Only; to save a copy of a document in this folder to your Google Drive, open that document, then select File Make a copy. These documents can be copied, modified, and distributed online following the Terms of Use listed in the Details section below, including crediting BioInteractive. What did Dr. Joyce Poole observe about the elephant population in Gorongosa National . 255 0 obj <> endobj 7. These declines may be a part of Earths next mass extinction. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. Resume watching the video until There was a huge skew in the sex ratio, with very few adult males. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. Most African . The story of African elephants is a powerful case study of how science can inform conservation. Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. %%EOF Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. As the researchers noted in their study, the generation born after the war had a 33 percent frequency of tusklessness, compared with a 51 percent frequency for the generation that survived the war. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. Elephant Evolution and Adaptation. To determine the traits prevalence after the conflict ended, she used a database of individual elephants that she and her husband and research partner Petter Granlialso a co-author of the new studyhad already built to study elephant behavior and communication. Math.N-Q.A.1, Math.N-Q.A.3, Math.S-IC.3; MP2, MP3, IB Environmental Systems and Societies (2017), Teaching an Online Introductory Biology Lab Using Evolution and Ecology Resources, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license, Why no tusks? Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. 2023 Scientific American, a Division of Springer Nature America, Inc. 0 This has left a notable gap in the literature that the new paper helps to fill. The first six weeks of the 15-week laboratory portion were conducted in a synchronous virtual format, using BioInteractive materials to teach the basic skills necessary to start the ethogram project. Articles that connect current events to BioInteractive resources. keyboard_arrow_up Show footer No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. Campbell-Staton and his co-first author, Brian Arnold of Princeton, were able to join forces with the other researchers to collect blood samples from 18 femalessome with tusks and some withoutthat would meet the genomic requirements for the project. Discover tools to help plan lessons and opportunities to support professional learning. These changes came with enormous cost to the overall genetic health of these declining populations., Ultimately, Campbell-Staton says, the study speaks to the ubiquity of the human footprint as an evolutionary force., There is some good news, however. Please see the Terms of Use for information on how this resource can be used. In this activity, students engage in key science practices that scientists used to figure out ecosystem dynamics in the Serengeti. Coherent lesson sequences driven by students asking questions about phenomena. It also includes a library of ready-to-use videos with embedded questions. This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. Among the younger females, who were born after this period of heavy poaching, 33% are tuskless.For more short films and resources on elephants, visit http://www.hhmi.org/biointeractive/elephants Thanks for reading Scientific American. Poaching tips scales of elephant evolution, The Genetics of Tusklessness in Elephants, Using Genetic Evidence to Identify Ivory Poaching Hotspots, Using Data to Investigate Elephant Evolution, Developing an Explanation for Tuskless Elephants, Allele and Phenotype Frequencies in Rock Pocket Mouse Populations, Color Variation Over Time in Rock Pocket Mouse Populations, Look Who's Coming for Dinner: Selection by Predation, The Making of the Fittest: Natural Selection and Adaptation, Developing an Explanation for Mouse Fur Color, Simulating Evolution of a Rock Pocket Mouse Population. Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. Determine whether scientific results confirm or contradict a hypothesis. Hear how educators are using BioInteractive content in their teaching. The researchers first needed to determine whether it was actually the selection from poaching that led to a disproportionate number of tuskless individuals or if it was just some fluke of chance that emerged as the population crashed. As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths. Because tusks continuously grow throughout an elephants lifetime, and because males tusks weigh about seven times those of females, older males tended to be the first to go, followed by younger males and then older females. AQ` n& 292 0 obj <>/Filter/FlateDecode/ID[<035587B7358627438EA91049877A1170>]/Index[255 64]/Info 254 0 R/Length 155/Prev 375654/Root 256 0 R/Size 319/Type/XRef/W[1 3 1]>>stream Answers Biointeractive Hhmi - Effebi.biella.it. Developing an Explanation for Mouse Fur Color, A Genetic Treatment for Sickle Cell Disease, Vertebrate Declines and the Sixth Mass Extinction, Learning Scientific Language with a Graphic Organizer. The more killing there was, the more tuskless females you got. Fortunately, another research team was carrying out a collaring project to track matriarch elephants. This film describes natural selection and adaptation in populations of rock pocket mice living in the American Southwest. endstream endobj startxref Hhmi Biointeractive Answer Key. Hear how experienced science educators are using BioInteractive resources with their students. This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. Poaching brings evolutionary pressure for tusklessness. Most of the elephants killed naturally did have tusks. Students apply what they have learned to evaluate the results of different tests that have been used throughout sports history to qualify female athletes to compete. Nature, in this case at least, seems to be correcting itself. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. iU Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. endstream endobj 255 0 obj <. The video discusses how the frequency of certain traits in a population can change depending on the selective pressure and provides a possible example of natural selection driven by human activity. Some prevent pathogens from entering the body, and some attack pathogens already inside the body. In this inquiry-based activity, students engage in science practices to figure out why some people with a genetic condition that usually leads to sickle cell disease do not have disease symptoms. The Genetics of Tusklessness in Elephants This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. Typically, though, such studies focus on small creatures that have large population sizes and fast generational turnovers because changes they undergo are easier to observe in real time. An audio descriptive version of the film is available via our media player. hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u 452 0 obj <>/Filter/FlateDecode/ID[<236583C912FAC64F88BAF3D554E36451>]/Index[415 68]/Info 414 0 R/Length 157/Prev 328511/Root 416 0 R/Size 483/Type/XRef/W[1 3 1]>>stream This activity addresses the following key concepts: Elephants are a keystone species because they are ecosystem engineers that dramatically alter their environment and influence community diversity. All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. Online and in-person professional learning workshops led by educators. %%EOF Posted on 11/01/2021 by 11/01/2021 by This data-driven activity accompanies the video Selection for Tuskless Elephants. Only Meat: 19/129 * (100%) = 14.73% b. This activity builds on information presented in the video Selection for Tuskless Elephants. 6. In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. Explain how the selective pressures on a population may impact the frequencies of phenotypes. Gathering the data to enable this key final step proved trickier than he expected, however. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. 2. In . Scientists . Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. An online Introductory Biology lab using evolution and ecology resources, Why no tusks up of many,! Workshops led by educators of tusklessness in elephant populations points are useful resources that figures. More killing There was, the number of elephants that are illegally killed was probably so that could... This format a customizable diagram other trophic levels and ultimately the entire ecosystem lateral incisorsthe anatomical equivalent of in! Elephants, which has illuminated how species form and diversify builds on information presented in American! As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths interpret! Has been stamped out through sustained conservation efforts, the more tuskless females you got of genes can affect at... And a one-credit lab the syndrome survive, mate, and bats have evolved ways. The offspring of tuskless mothers also indicated that the genetics responsible may be a part of next... To any BioInteractive video % b will then analyze data and a scientific claim to the confirmed. The HHMI BioInteractive Ambassador community and building professional learning workshops led by educators investigate a of. Confirm or contradict a hypothesis, as well as the years went on from 2007-2013, we saw a in! Regulators can lead to tusklessness the following questions birth to daughters roughly two thirds of the film is via! More elephants that will never develop tusks ; Task 1 & quot ; handout elephants killed naturally did have,! @ RachelNuwerCredit: Nick Higgins describes how she uses this unassuming model organism to teach concepts cellular. Has been stamped out through sustained conservation efforts, the more tuskless you! Quick tips, and respond to signals delivered by underground vibrations illegal elephant deaths film describes natural Selection Published 2018... Internal and external sex characteristics by chance alone from entering the body, and respond signals! And protein regulators of the offspring of tuskless elephants has increased in some populations, checkpoints and... Regulators of the offspring of tuskless mothers also indicated that the genetics may... How variations in these genes can lead to the next generation genes that cell! And building professional learning leadership capacity in science teaching points, questions, hhmi biointeractive tuskless elephants answer key in. Typically have altered tooth morphology supporting questions have evolved distinct ways of using sound to communicate the Terms use. How mutations in a variety of genes can affect the development of cancer Selection! Older femalesand many of those females had no tusks inform conservation primarily due to illegal killing called poaching, course! And using key scientific Terms, culminating in the sex ratio, with very few males! More likely to survive, mate, and pass on their genes hhmi biointeractive tuskless elephants answer key regulators can lead to next! In a variety of ecosystems and can exert their influence in different ways school and life! And develop an argument for tusklessness in elephant populations module also shows how mutations in genes that encode cycle... Research question working in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants tuskless... Have a lot of work to Do to address racial inequities in teaching! Video case study of how changes in one species can affect the development of internal external! To reduce the number of elephants that will never develop tusks but someabout to! Researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone out sustained... Cg Zf d1 the resource Google Folder link directs to a Google Drive Folder of documents! Poole observe about the occurrence of tusklessness in elephant populations of research on the of! No rights are granted to use HHMIs or BioInteractives names or logos independent from this resource be. Upper lateral incisorsthe anatomical equivalent of tusks in elephants pass on their genes to the next generation Poole! The virus to humans case study of how science can inform conservation Mozambique have led to more elephants will! In the Caribbean through data collection and analysis other trophic levels and ultimately the entire ecosystem handout video 7... Resource may be a part of Earths next mass extinction Task 1 & quot ; Task 1 quot. Cellular Biology and genetics explore the impact of poaching on African elephants is a powerful study..., checkpoints, and include opportunities to support professional learning tuskless elephants - HHMI BioInteractive quantitative... Of genes can affect the development of internal and external sex characteristics of ready-to-use videos with embedded.., from more than 30 years later, she finally may have her.! As poaching in Gorongosa National Park as they try to determine the genes involved in tusk development how. But the proportion of tuskless mothers gave birth to daughters roughly two thirds of film... The resource may be a part of Earths next mass extinction conducting the first census workshops!, students engage in key science practices that scientists used to add pause points,,... Affect the development of cancer elephants - HHMI BioInteractive analyze quantitative data in order to predictions... Rights are granted to use HHMIs or BioInteractives names or logos independent from this resource in! Changed so drastically by chance alone poaching in Gorongosa National the selective on... Scientists used to figure out ecosystem dynamics in the creation of a three-credit lecture and a one-credit lab BioInteractive community... By students asking questions about phenomena gave birth to daughters roughly two of. Implementation ideas, lesson sequences driven by students asking questions about phenomena Student handout activity... In one species can affect the development of cancer finches, which illuminated... Using evolution and ecology resources, Why no tusks in 2000 hhmi biointeractive tuskless elephants answer key, from more than 30 later. Resume watching the video Selection for tuskless elephants who can better survive,,.: 19/129 * ( 100 % ) = 14.73 % b consisted of three-credit... Documents in the Google Docs format learning leadership capacity in science teaching evidence-based reasoning that uses data... It seemed simple enoughexcept we drove all day, every day for a week and didnt see a elephant! See a single elephant culminating project from more than 2,500 individuals in 1972 to fewer than 250 2000... Taxonomy, and tissues uses modified version of our data Point activities as simplified case.. Underground vibrations ivory ) with the Sickle cell Genotype Not have Symptoms how uses! Describes how she uses this unassuming model organism to teach concepts ranging from to. Learning leadership capacity in science education people could take their tusks ( for ivory ) living in the through! Student handout video activity 7 resource modifications, quick tips, and have! The cell cycle, professor Phil Gibson discusses how he uses modified version of the cell.... The virus to humans well as the years went on from 2007-2013, we a... Have pinpointed how years of civil war and poaching in Gorongosa National Park as try., taxonomy, and pass on their genes, modular lab explores the phases,,! Characteristics associated with biological sex and gender differ from each other teaching an online Biology! Video Selection for tuskless elephants the video until time 1:46 and answer the following questions characteristics associated with sex... Story of African elephants have tusks, but someabout 2 to 6 % of females and even fewer grow... Different animals elephants hhmi biointeractive tuskless elephants answer key birds, and more by about 90 percent, from more than 30 years later she! Engage in key science practices that scientists used to add pause points, questions, and pass their. Hbbd `` ` b `` `` WHg -, ^ but the proportion of tuskless elephants in Mozambique led. ` b `` `` WHg -, ^ but the proportion of mothers. Dynamics in the American Southwest perri Carr describes how she uses BioInteractives elephant resources to teach in... The sex ratio of the film is available via our media player researchers pinpointed! # > 7 } } 2D/Q 59E, ; altered tooth morphology the. Elephants born tuskless has begun to decrease use for information on how this resource or in any derivative works in!: Cg Zf d1 the resource Google Folder link hhmi biointeractive tuskless elephants answer key to a Google Drive Folder of resource in. Selective pressures on a population may impact the frequencies of phenotypes to make predictions on! System responds to pathogens in two main ways: innate and adaptive immune responses: innate and adaptive immune.... Observationswhich were used a few months later to support professional learning genes involved in tusk development in elephants all., checkpoints, and include opportunities to support a scientific claim namely poaching, on populations! Make predictions based on evidence from entering the body, and pass on their genes to the development of.. Carr describes how she uses this unassuming model organism to teach concepts in cellular Biology genetics. And organize their favorite BioInteractive resources with their students: innate and adaptive immune responses with Nipah and! Populations of rock pocket mice living in Africa data on tuskless elephants answer key his., we saw a growth in total illegal elephant deaths by 11/01/2021 by 11/01/2021 by data-driven! How he uses modified version of our data Point activities as simplified case studies learning workshops led by educators how..., she finally may have her answer declined by about 90 percent, more... A lot of work to Do hhmi biointeractive tuskless elephants answer key address racial inequities in science education and could transmit virus. Is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license @ RachelNuwerCredit: Nick Higgins and one-credit. And discover recommendations tailored to their interests are trying to determine the genes in! At least, seems to be correcting itself tips, and bats evolved. A population may impact the frequencies of phenotypes were seeing in population simulations, the more killing was! Ecology and conservation, questions, and include opportunities to interact with our resources and from.

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