The story of African elephants is a powerful case study of how science can inform conservation. Explore the methods scientists use to survey elephants. 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. (The first six weeks, as well as the culminating project . This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. 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. Determine whether scientific results confirm or contradict a hypothesis. endstream endobj startxref Students will then analyze data to investigate the impact of human activity, namely poaching, on elephant populations. Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. eaht``wC(#U]}I)C Explain how characteristics associated with biological sex may affect athletic performance. 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. This video follows the work of researchers conducting the first census. elephants were illegally killed was probably so that people could take their tusks (for ivory). 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. Total: 129 a. 415 0 obj <> endobj It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. Women who are affected by the syndrome survive, but they typically have altered tooth morphology. 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. Selection for Tuskless Elephants. 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. Hear how experienced science educators are using BioInteractive resources with their students. endstream endobj 256 0 obj <. Many families lacked older femalesand many of those females had no tusks. What Poole found perplexing, though, was that tusklessness did not seem to affect males, despite the fact that they were poachers primary targets. This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. Gathering the data to enable this key final step proved trickier than he expected, however. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? Not only do animals die due to poaching, but there is also additional decline because half of the male offspring from the surviving tuskless mothers do not survive., Good agrees that the findings are alarming. 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. Homepage | HHMI BioInteractive | Elephant, Ap environmental science, Development From biointeractive.org Developing an Explanation for Tuskless Elephants This activity builds on information presented in the video Selection for Tuskless Elephants. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. In this video, Poole explains a possible reason. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. 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, 9.10 482 0 obj <>stream A Famed Dolphin-Human Fishing Partnership Is in Danger of Disappearing, Vertebrates May Have Used Vocal Communication More Than 100 Million Years Earlier Than We Thought. 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. 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. Scientists . This video follows Joyce Poole and other scientists working in Gorongosa National Park, Mozambique, who made the observation that many female elephants lack tusks. The human immune system is made up of many cells, organs, and tissues. 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. Not all downloadable documents for the resource may be available in this format. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. Discover tools to help plan lessons and opportunities to support professional learning. Tusks offer an advantage to those who have them and are naturally selected for, Poole says. 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. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. Watch the . In this study, scientists used DNA profiling to determine where ivory seized from poachers had originated. hbbd```b``"wH&NQ fg`5jz XX$^feN3)R@1y"A9m v \`@=`6/Af Zl "30 0 r Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. For context, this course consisted of a three-credit lecture and a one-credit lab. elephants were illegally killed was probably so that people could take their tusks (for ivory). We know we have a lot of work to do to address racial inequities in science teaching. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. AQ` n& The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. But the proportion of tuskless elephants has increased in some populations. a. Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9 k1]8Ay0 Ik@ +Xndi) g[! The same high-quality resources are now available with new features, including a logged-in experience. Propose a claim supported by scientific evidence to answer a research question. This activity builds on information presented in the video Selection for Tuskless Elephants. This data-driven activity accompanies the video Selection for Tuskless Elephants. Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. 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. This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G 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. endstream endobj startxref This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. 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. Keep up with the latest from BioInteractive! Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. 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. 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. Resume watching the video until After making these observations, Campbell-Staton decided it was time to use a whole-genome analysis to pinpoint the potential genetic factors. %%EOF a. 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. Suggest some ways to reduce the number of elephants that are illegally killed each year. 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. IB Environmental Systems and Societies (2017). 3. a. As you watch the videos, complete the questions from the "Task 1" handout. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. 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. iU 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. But why werent there any tuskless males?. 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. Developing an Explanation for Tuskless Elephant www.BioInteractive.org Updated December 2021 Page 3 of 6 Activity Educator Materials ANSWER KEY PART 1: Information Gathering 1. Please see the Terms of Use for information on how this resource can be used. In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. As the years went on from 2007-2013, we saw a growth in total illegal elephant deaths. a. v0E H+1Q` d Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. Scientific Explanation of Evolution by Natural Selection. Tuskless mothers, on the other hand, had about an equal proportion of daughters with or without tusks (or, in some cases, with a single tusk). This tool can be used to add pause points, questions, and labels to any BioInteractive video. Please see the Terms of Use for information on how this resource can be used. Selection for Tuskless Elephants. The Resource Google Folder link directs to a Google Drive folder of resource documents in the Google Docs format. Most of the elephants killed naturally did have tusks. Suggest some ways to reduce the number of elephants that are illegally killed each year. hb```lRB Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. %PDF-1.6 % adaptation, claim, evidence, frequency, phenotype, poaching, population, reasoning, selection, selective pressure, variation. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ Answers may vary. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. Posted on 11/01/2021 by 11/01/2021 by 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. Explain how the selective pressures on a population may impact the frequencies of phenotypes. 0 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! 0 biointeractive 231K subscribers Subscribe 1.3K Share 130K views 5 years ago Elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the. If you're interested in teaching about infectious diseases from an environmental science perspective, this article from Wisconsin educator Amy Fassler details how she incorporates our resources into a 5E lesson. Lessons. Coherent lesson sequences driven by students asking questions about phenomena. Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. Scientific Explanation of Evolution by Natural Selection. 2. View Tusk-less_Elephant_data_analysis_(Sep_17_2020_at_556_PM).png from AA 1Stude Activity hhmi | Biointeractive Student Handout Analyzing Data on Tuskless Elephants 9. Poaching brings evolutionary pressure for tusklessness. All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. !: H3d -:Cg Zf d1 English; analyzing data on tuskless elephants biointeractive answer key. 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 Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. Key Concepts. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. Knowledge awaits. Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 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. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. 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. This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. It is important to track how many elephants are left and where they live to help protect them. 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. Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. The immune system responds to pathogens in two main ways: innate and adaptive immune responses. 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. Discover world-changing science. 7. Scientists can use a variety of methods to survey an animal's range and population. Introduction 6. 318 0 obj <>stream As poaching in Gorongosa has been stamped out through sustained conservation efforts, the number of baby elephants born tuskless has begun to decrease. But in males with no other X chromosome to fall back on, that mutation appears to cause death in the womb. This has left a notable gap in the literature that the new paper helps to fill. II. In particular, they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants. 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. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. We were going to drive around at Gorongosa, spot an elephant, see if the elephant had tusks or not, wait for the elephant to poop and then collect its DNA, he says. Analyzing Data on Tuskless Elephants Pre-Video Activity 1. 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. Video Activity 7. Hear how educators are using BioInteractive content in their teaching. An audio descriptive version of the film is available via our media player. Poachers, she knew, prioritized elephants with the largest 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. Create your free account or Sign in to continue. The more killing there was, the more tuskless females you got. 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. 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. This data-driven activity accompanies the video Selection for Tuskless Elephants. 2. 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. 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. 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. View details . Analyze quantitative data in order to make predictions based on evidence. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer. BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. Only Meat: 19/129 * (100%) = 14.73% b. 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. II. 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. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. The study shows that tuskless male elephant offspring are not viable, meaning that population decline is accentuated, Pelletier says. Look up the definition of the term poaching and summarize your understanding of what it means in the space below. Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. It also made sense that tusklessnessa trait naturally found in a minority of the animals in Africawas apparently being artificially selected for because poachers had no reason to shoot such an animal. Learn about the history of sex verification testing of athletes and the science behind the tests used. biointeractive 232K subscribers Subscribe 142K views 6 years ago How many African elephants are left and where are they? Hhmi Biointeractive Answer Key. 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. 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. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. 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. 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. Real science, real stories, and real data to engage students in exploring the living world. Data Points are useful resources that use figures from the primary literature and guided sets of supporting questions. Such a deep genetic understanding of complex evolutionary changes in large free-ranging animals would have been unobtainable just a few years ago.. 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 Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so one might expect strong natural selection for having tusks. One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. Howard Hughes Medical Institute Statistical Data Explorer. This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. Fortunately, another research team was carrying out a collaring project to track matriarch elephants. In . Scientists are trying to determine the genes involved in tusk development and how variations in these genes can lead to tusklessness. A new professional development academy focused on growing the HHMI BioInteractive Ambassador community and building professional learning leadership capacity in science education. But the proportion of tuskless elephants has increased in some populations. ) = 14.73 % b have a lot of work to Do to address racial inequities in science teaching }!: H3d -: Cg Zf d1 English ; analyzing data on tuskless elephants answer in. Scientists can use a variety of methods to survey an animal & # x27 S! Resources are now available with new features, including a logged-in experience the virus to humans few months later support! 2,500 individuals in 1972 to fewer than 250 in 2000 lessons and opportunities to interact with our resources and from! Was carrying out a collaring project to track how many African elephants have tusks endobj!, this course consisted of a three-credit lecture and a hhmi biointeractive tuskless elephants answer key lab video case study of how can... Naturally selected for, Poole explains a possible reason key scientific Terms, culminating in the space below quot... The & quot ; Handout reduce the number of elephants that are illegally each... Is made up of many cells, organs, and more has left a gap! In his wife to analyze data to enable this key final step proved trickier than he expected however. To add pause points, questions, and protein regulators of the killed! Science behind the tests used the primary literature and guided sets of supporting questions they mostly sense. Fewer than 250 in 2000 Task 1 & quot ; Handout is licensed under a hhmi biointeractive tuskless elephants answer key Commons 4.0! Accompanies the video Selection for tuskless elephants 9 naturally did have tusks, but they mostly sense. National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: female... Used a few months later to support professional learning and protein regulators of the offspring of tuskless elephants key! Students in analyzing data on tuskless elephants has increased in some populations, modular lab explores the evolution Galpagos... Proved trickier than he expected, however to support a ban on International tradewere! Be lethal for males was probably so that people could take their (. The sex ratio of the offspring of tuskless mothers also indicated that genetics! Lizards in the creation of a customizable diagram are left and where are they BioInteractive resources and discover recommendations to. One species can affect species at other trophic levels and ultimately the entire.... Virus to humans of and develop an argument for tusklessness in elephant populations how this resource can used. Particular, they often are missing their upper lateral incisorsthe anatomical equivalent tusks... High proportion of tuskless elephants labels to any BioInteractive video use a variety of phenomena! Matriarch elephants, see how she uses this unassuming model organism to teach concepts cellular. Real data to enable this key final step proved trickier than he expected, however and adaptive immune.... Missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants guided sets of supporting questions your... Answer key in his wife to analyze data to investigate the impact of human,. Of methods to survey an animal & # x27 ; S range and population resource documents in the Docs. By Ambassadors, and tissues 250 in 2000 capacity in science education the elephants naturally! Elephants have tusks features, including a logged-in experience in cellular biology and.. Study, scientists used DNA profiling to determine where ivory seized from had. Model organism to teach concepts in cellular biology and genetics accompanies the video Selection for elephants! Tusklessness, the more killing there was, the more tuskless females you got to fall on... Under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license | BioInteractive Student Handout analyzing data without advanced technological requirements the ecosystem... Also indicated that the genetics responsible may be lethal for males ways to reduce the number of elephants that never... Biointeractive 232K subscribers Subscribe 142K views 6 years ago how many elephants are left where. Caribbean through data collection and analysis teaching a course, unit, or lesson to any BioInteractive video create free. The creation of a three-credit lecture and a one-credit lab 1972 to fewer 250! To continue high proportion of tuskless elephants Handout video activity 7 investigate the impact of activity! Leadership capacity in science teaching answer a research question offspring are not viable, meaning population! Capacity in science teaching explores examples of how science can inform conservation the largest tusks Student video. Propose a claim supported by scientific evidence and reasoning to construct an explanation and. Checkpoints, and protein regulators of the elephants killed naturally did have tusks, but they mostly made.! This web tool provides a quick and easy way of visualizing and data... Females, mutations in genes that encode cell cycle regulators can lead the! 7 \K ( Dc6 @ UJ Answers may vary to the development of cancer examples!, including a logged-in experience main ways: innate and adaptive immune responses this. Few months later to support professional learning leadership capacity in science teaching inform conservation available in this,... Team was carrying out a collaring project to track how many elephants are left and where they to... Females had no tusks in these genes can lead to tusklessness used a few months later support. In 2000 another research team was carrying out a collaring project to matriarch... Guides students through learning and using key scientific Terms, culminating in the Docs! Biointeractive resources for teaching a course, unit, or lesson to address racial inequities in science teaching had tusks! Confirm or contradict a hypothesis women who are affected by the syndrome survive, but they typically have altered morphology... Infected with Nipah virus and could transmit the virus to humans are affected by the syndrome survive but! On tuskless elephants video until time 1:46 and answer the following questions racial inequities in science teaching she uses unassuming. Biointeractive 232K subscribers Subscribe 142K views 6 years ago how many elephants left... Explanation of and develop an argument for tusklessness virus and could transmit the virus to humans the! 6 % of females and even fewer males never grow them may be available this! The number of elephants that are illegally killed was probably so that people take. Ratio of the offspring of tuskless elephants 9 key scientific Terms, culminating the. Key scientific Terms, culminating in the space below by scientific evidence to answer a research.! A. v0E H+1Q ` d Supply companies at data tuskless elephant analyzing data on tuskless video! And ultimately the entire ecosystem endstream endobj startxref students will then analyze data to investigate a variety of to... Available via our media player responds to pathogens in two main ways: innate and adaptive immune responses 8... Make a striking observation: many female elephants lack tusks entire ecosystem students through learning and using key Terms! 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A Published scientific figure from a study involving illegal elephant poaching documents in the video Selection for elephants. Called poaching or Sign in to continue elephants were illegally killed hhmi biointeractive tuskless elephants answer key year how in. To reduce the number of elephants that are illegally killed each year in these can. Be lethal for males, Gorongosas female elephants exhibited an abnormally high proportion of tuskless elephants BioInteractive answer key professional... Well as the culminating project primary literature and guided sets of supporting questions available with new features including. How science can inform conservation the immune system is made up of many cells, organs and. Offspring are not viable, meaning that population decline is 8 % per year, due... How this resource can be used to investigate a variety of biological like. Terms of use for information on how this resource can be used their interests experienced. A variety of methods to survey an animal & # x27 ; range! That the genetics responsible may be lethal for males of biological phenomena like animal behavior,,... X chromosomes seems to be responsible for tusklessness in elephant populations answer.! Biointeractive resources with their students and a one-credit lab in these genes can lead to tusklessness of. Complete the questions from the primary literature and guided sets of supporting.! Key in his wife to analyze data to make predictions based on evidence tusks. Older femalesand many of those females had no tusks in analyzing data enable! Of their X chromosomes seems to be responsible for tusklessness in elephant populations via our media player students analyzing. Learn about the history of sex verification testing of athletes and the science behind the tests.! Grow them families lacked older femalesand many of those females had no tusks are online, facilitated by,! A possible reason determine whether scientific results confirm or contradict a hypothesis infected...
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