Description. Provide evidence-based reasoning that uses available data to support a scientific claim. Poaching brings evolutionary pressure for tusklessness. As you watch the videos, complete the questions from the "Task 1" handout. 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. 0
More than 30 years later, she finally may have her answer. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. Hear how educators are using BioInteractive content in their teaching. 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. 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. 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. Resume watching the video until Scientists can use a variety of methods to survey an animal's range and population. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. The same high-quality resources are now available with new features, including a logged-in experience. In this article from professor Karen Avery, see how she uses this unassuming model organism to teach concepts in cellular biology and genetics. Thanks for reading Scientific American. 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. 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. 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. The video focused on Mozambiques Gorongosa National Park, which suffered especially heavy poaching during the Mozambican Civil War, which occurred from 1977 to 1992. 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. But the proportion of tuskless elephants has increased in some populations. %%EOF
(The first six weeks, as well as the culminating project . Discover tools to help plan lessons and opportunities to support professional learning. 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! 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. Among the younger females, who were born after this period of heavy poaching, 33% are tuskless. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9
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These declines may be a part of Earths next mass extinction. Analyzing Data on Tuskless Elephants Pre-Video Activity 1. Answers may vary. Explore the methods scientists use to survey elephants. Real science, real stories, and real data to engage students in exploring the living world. Determine whether scientific results confirm or contradict a hypothesis. Propose a claim supported by scientific evidence to answer a research question. 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. BioInteractive is committed to providing equitable learning opportunities to educators and students. But in males with no other X chromosome to fall back on, that mutation appears to cause death in the womb. 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 film describes natural selection and adaptation in populations of rock pocket mice living in the American Southwest. 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. 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. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 318 0 obj
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EEH6~SlL.3a5, In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. video until time 1:46 and answer the following questions. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them.
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. IB Environmental Systems and Societies (2017). After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. 2. 7. Introduction Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop tusks. The human immune system is made up of many cells, organs, and tissues. 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. Some prevent pathogens from entering the body, and some attack pathogens already inside the body. Scientific Explanation of Evolution by Natural Selection. It is important to track how many elephants are left and where they live to help protect them. II. Watch the . Gathering the data to enable this key final step proved trickier than he expected, however. We know we have a lot of work to do to address racial inequities in science teaching. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! Describe how biological sex and gender differ from each other. Articles that connect current events to BioInteractive resources. 2023 Scientific American, a Division of Springer Nature America, Inc. eaht``wC(#U]}I)C Students will then analyze data to investigate the impact of human activity, namely poaching, on elephant populations. 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 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. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. !: H3d -:Cg
Zf d1 Suggest some ways to reduce the number of elephants that are illegally killed each year. Online and in-person professional learning workshops led by educators. 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. Explain how characteristics associated with biological sex may affect athletic performance. Such a deep genetic understanding of complex evolutionary changes in large free-ranging animals would have been unobtainable just a few years ago.. a. Howard Hughes Medical Institute Statistical Data Explorer. Elephant Evolution and Adaptation. Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. 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. 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. Researchers created the model in Figure 1 using data from cell fractionation studies. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. v0E H+1Q` d
In particular, they often are missing their upper lateral incisorsthe anatomical equivalent of tusks in elephants. 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. 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. 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. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. 254 0 obj
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Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. Pooles observationswhich were used a few months later to support a ban on international ivory tradewere alarming, but they mostly made sense. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. 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. Women who are affected by the syndrome survive, but they typically have altered tooth morphology. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. Keep up with the latest from BioInteractive! Most African . This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. This video follows the work of researchers conducting the first census. Meat Only: 19 b. Tusks Only: 75 c. Meat and Tusks: 27 4. This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. 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. Please see the Terms of Use for information on how this resource can be used. In population simulations, the researchers confirmed that it is extremely unlikely that tusklessness would have changed so drastically by chance alone. Many families lacked older femalesand many of those females had no tusks. Suggest some ways to reduce the number of elephants that are illegally killed each year. endstream
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<. Discover world-changing science. For context, this course consisted of a three-credit lecture and a one-credit lab. Elephants with large tusks are targeted by poachers who sell the tusks on the ivory market. This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point . 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. video until time 1:46 and answer the following questions. In this activity, students engage in key science practices that scientists used to figure out ecosystem dynamics in the Serengeti. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. View details . This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, replication cycles, and vaccine availability. 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. hbbd```b``"wH&NQ
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elephants were illegally killed was probably so that people could take their tusks (for ivory). Answers may vary. Describe how mutations in a variety of genes can affect the development of internal and external sex characteristics. 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. II. 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. hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! Analyze quantitative data in order to make predictions based on evidence. This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. Most African elephants have tusks, but some about 2% to 6% of females and even fewer males never grow them. The story of African elephants is a powerful case study of how science can inform conservation. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. 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. 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. 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. Video Activity 7. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts Gorongosas elephant population declined by about 90 percent, from more than 2,500 individuals in 1972 to fewer than 250 in 2000. This data-driven activity accompanies the video Selection for Tuskless Elephants. Supply companies at data tuskless elephant analyzing data tuskless elephants answer key in his wife to analyze data and. 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. This video follows ecologist Caitlin O'Connell-Rodwell, who is studying how elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the ground. 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 This activity builds on information presented in the video Selection for Tuskless Elephants. 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. |U#62RF>^/,[4@[S5MT3M_q+; u* But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. Elephants with large tusks are targeted by poachers, who sell the tusks on the ivory market. 452 0 obj
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Poachers, she knew, prioritized elephants with the largest tusks. It also includes a library of ready-to-use videos with embedded questions. Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. The Click & Learn uses ongoing debates about the eligibility of certain female athletes to participate in women's events as an entry point for students to learn the processes involved in human reproductive development. In this video, Poole explains a possible reason. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. 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. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. Total: 129 a. English; analyzing data on tuskless elephants biointeractive answer key. 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. %%EOF
All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. 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. a. Only Meat: 19/129 * (100%) = 14.73% b. Lessons. 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. Scientific Explanation of Evolution by Natural Selection. 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. 11{TO8+J1FOf%E%12Xbtb?S`8,A 7 \K(Dc6@ UJ
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