Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. This data-driven activity accompanies the video Selection for Tuskless Elephants. This activity builds on information presented in the video Selection for Tuskless Elephants. keyboard_arrow_up Show footer Online and in-person professional learning workshops led by educators. 0 Total: 129 a. Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. In this activity, students engage in key science practices that scientists used to figure out ecosystem dynamics in the Serengeti. Analyze quantitative data in order to make predictions based on evidence. 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. Thanks for reading Scientific American. 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. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. Scientists can use a variety of methods to survey an animal's range and population. Answers may vary. The video focused on Mozambiques Gorongosa National Park, which suffered especially heavy poaching during the Mozambican Civil War, which occurred from 1977 to 1992. 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? 2. Introduction 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 Scientific Explanation of Evolution by Natural Selection. This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. Propose a claim supported by scientific evidence to answer a research question. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. 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. This has left a notable gap in the literature that the new paper helps to fill. Keep up with the latest from BioInteractive! Explain how characteristics associated with biological sex may affect athletic performance. Resume watching the video until For context, this course consisted of a three-credit lecture and a one-credit lab. 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. View details . Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. 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. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. 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. Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. 254 0 obj <> endobj Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. 316 0 obj <>stream Poaching brings evolutionary pressure for tusklessness. Analyzing Data on Tuskless Elephants Pre-Video Activity 1. This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. 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. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 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). Hhmi Biointeractive Answer Key. 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. hb```lRB It seemed simple enoughexcept we drove all day, every day for a week and didnt see a single elephant.. 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! Lessons. It also includes a library of ready-to-use videos with embedded questions. a. Continue reading with a Scientific American subscription. This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram. 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. This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem. 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. This interactive video explores how scientists identify which bat populations are infected with Nipah virus and could transmit the virus to humans. chromosome, differences in sex development (DSD), estrogen, Olympics, ovary, primary/secondary sex characteristic, sex determining region Y (SRY), testes, testosterone, X inactivation. 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. 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. 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. No rights are granted to use HHMIs or BioInteractives names or logos independent from this Resource or in any derivative works. 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. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. 318 0 obj <>stream Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. 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. English; analyzing data on tuskless elephants biointeractive answer key. We know we have a lot of work to do to address racial inequities in science teaching. 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. This data-driven activity accompanies the video Selection for Tuskless Elephants. a. Scientific Explanation of Evolution by Natural Selection. Most African . Many families lacked older femalesand many of those females had no tusks. But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. hb```lJB 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. hbbd```b``"WHg -,^ In this activity, students work with authentic research data to explore the impact of poaching on African elephants. endstream endobj startxref Gathering the data to enable this key final step proved trickier than he expected, however. 482 0 obj <>stream Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. Explain how the selective pressures on a population may impact the frequencies of phenotypes. Describe how mutations in a variety of genes can affect the development of internal and external sex characteristics. eaht``wC(#U]}I)C Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. 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. %%EOF This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. 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. The following statement reflects our current and specific actions. It is important to track how many elephants are left and where they live to help protect them. 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. Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. Anatomy & Physiology Scientific Skills & Literacy Click & Learn High School General High School AP/IB College Selection for Tuskless Elephants This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. The module also shows how mutations in genes that encode cell cycle regulators can lead to the development of cancer. hbbd```b``"WH&. lz`f1,f u d Vi 2D7e@l( XDrG;".|`10H-v9Pl=0 u Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. Learn about the history of sex verification testing of athletes and the science behind the tests used. Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. Describe how biological sex and gender differ from each other. Natural Selection Published October 2018 www.BioInteractive.org Page 3 of 6 Activity Student Handout Video Activity 7. These declines may be a part of Earths next mass extinction. II. This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change. Elephant Evolution and Adaptation. In this activity, students collect and analyze evidence for each of the major conditions for evolution by natural selection to develop an explanation for how populations change over time. Nature, in this case at least, seems to be correcting itself. 6. 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. This activity explores images of elephants with and without tusks, which serve as phenomena for learning about selection and human impacts on the frequency of traits within populations. 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. Use evidence-based predictions to explain how a population changes over time due to human impacts. PART 2: Video Activity . video until time 1:46 and answer the following questions. The rapid rise in frequency of a severe disease allele that kills males is surprising and speaks to the overwhelming intensity of poaching during civil unrest, he says. 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