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. The accompanying worksheet guides students exploration. (The first six weeks, as well as the culminating project . Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues make a striking observation: many female elephants lack tusks. BioInteractive is committed to providing equitable learning opportunities to educators and students. adaptation, claim, evidence, frequency, phenotype, poaching, population, reasoning, selection, selective pressure, variation. This web tool provides a quick and easy way of visualizing and analyzing data without advanced technological requirements. This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways. This activity guides the analysis of a published scientific figure from a study involving illegal elephant poaching. 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. hb```lJB The story of African elephants is a powerful case study of how science can inform conservation. 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. Nature, in this case at least, seems to be correcting itself. The frequency of tusklessness, the team found, increased from about 18.5 percent before the war to 50.9 percent after. In this article, professor Phil Gibson discusses how he uses modified version of our Data Point activities as simplified case studies. rev-a-shelf 6942-28-11-52; stride rite sandals baby girl; five spice beef noodle soup Create your free account or Sign in to continue. 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. Howard Hughes Medical Institute Statistical Data Explorer. Watch the . Planarians can be used to investigate a variety of biological phenomena like animal behavior, mitosis, taxonomy, and more. 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. 2. There was a huge skew in the sex ratio, with very few adult males. 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. All workshops are online, facilitated by Ambassadors, and include opportunities to interact with our resources and learn from other educators. 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. But he found himself sucked into the mystery of tuskless elephants when he watched a YouTube video about the phenomenon. But in males with no other X chromosome to fall back on, that mutation appears to cause death in the womb. 0 a. 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. 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. 254 0 obj <> endobj View details . This interactive, modular lab explores the evolution of the anole lizards in the Caribbean through data collection and analysis. Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. Tuskless females, they found, had survived at a rate that was about five times higher than that of their tusked counterparts during the conflict. Poaching is selecting for tuskless elephants, which are more likely to survive, mate, and pass on their genes. In females, mutations in a key gene on one of their X chromosomes seems to be responsible for tusklessness. This data-driven activity accompanies the video Selection for Tuskless Elephants. 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. It engages students in analyzing data to make evidence-based claims about the occurrence of tusklessness in elephant populations. HHMI is investing in increasing racial, ethnic, and gender diversity in academic science to create environments in which everyone can thrive. 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. endstream endobj startxref 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. 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. Only Meat: 19/129 * (100%) = 14.73% b. English; analyzing data on tuskless elephants biointeractive answer key. 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. Hear how educators are using BioInteractive content in their teaching. Watch the Selection for Tuskless Elephants video until time 1:46 and answer the following questions. 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. This video follows scientists working in Gorongosa National Park as they try to determine the genes responsible for tusk development in elephants. This video case study explores whether elephants can detect, interpret, and respond to signals delivered by underground vibrations. But the proportion of tuskless elephants has increased in some populations. 3. a. video until time 1:46 and answer the following questions. 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. hhmi biointeractive tuskless elephants answer key About; Location; Menu; FAQ; Contacts 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. Selection for Tuskless Elephants. 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. video until time 1:46 and answer the following questions. endstream endobj startxref This interactive module explores how different animals elephants, birds, and bats have evolved distinct ways of using sound to communicate. Students will then analyze data to investigate the impact of human activity, namely poaching, on elephant populations. The same high-quality resources are now available with new features, including a logged-in experience. 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. 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. Scientific Explanation of Evolution by Natural Selection. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. Resume watching the video until This video follows the work of researchers conducting the first census. As you watch the videos, complete the questions from the "Task 1" handout. Most of the elephants killed naturally did have tusks. 2023 Scientific American, a Division of Springer Nature America, Inc. Most African elephants have tusks, but some never grow them especially in places that have a history of poaching, like Gorongosa National Park. eaht``wC(#U]}I)C Poachers, she knew, prioritized elephants with the largest tusks. hbbd```b``"WHg -,^ 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 This activity guides the analysis of a published scientific figure from a study that measured species population declines on a global scale. Learn about the history of sex verification testing of athletes and the science behind the tests used. Perri Carr describes how she uses BioInteractives elephant resources to teach concepts ranging from biotechnology to genetics to ecology and conservation. 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. 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. Researchers have pinpointed how years of civil war and poaching in Mozambique have led to more elephants that will never develop 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. a. Video Activity 7. One of the genes, AMELX, is known from decades of basic research in mice and humans to play a role in mammalian tooth development. This data-driven activity accompanies the video Selection for Tuskless Elephants. ;X2ELb/6-qRrT3p0=qb3]1#>7}}2D/Q 59E ,;! Describe how mutations in a variety of genes can affect the development of internal and external sex characteristics. Hhmi Biointeractive Answer Key. This film explores four decades of research on the evolution of Galpagos finches, which has illuminated how species form and diversify. Discover implementation ideas, lesson sequences, resource modifications, quick tips, and more in this collection of videos and in-depth articles. In this study, scientists used DNA profiling to determine where ivory seized from poachers had originated. pe*X|Xem&5*d X;d3^"kNIc rH+d ``s2AJn#*d9X;DAge`0?k G 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. The sex ratio of the offspring of tuskless mothers also indicated that the genetics responsible may be lethal for males. 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. Ordered sequences of BioInteractive resources for teaching a course, unit, or lesson. 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 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. Like other places that had undergone intense poaching, Gorongosas female elephants exhibited an abnormally high proportion of tusklessness. BioInteractive is offering free workshops for high school and undergraduate life and environmental science educators. Learning Objectives & Practices: ERT-2.A, ERT-2.H, EIN-4.C, SP5, SP6, ELA.RST.9-12.7, ELA.WHST.9-12.1 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. Answers may vary. Please see the Terms of Use for information on how this resource can be used. The human immune system is made up of many cells, organs, and tissues. Introduction But the proportion of tuskless elephants has increased in some populations. Analyzing Data on Tuskless Elephants Pre-Video Activity 1. Instead of having sons and daughters at an equal proportion, tuskless mothers gave birth to daughters roughly two thirds of the time. Explain how characteristics associated with biological sex may affect athletic performance. II. hb```lRB Describe how biological sex and gender differ from each other. 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. Follow Nuwer on Twitter @RachelNuwerCredit: Nick Higgins. ea`|wC"bSfoxjtZ&T2(i+q,|:m!J@ dP6H EEH6~SlL.3a5, Researchers created the model in Figure 1 using data from cell fractionation studies. Most African elephants have tusks, but someabout 2 to 6% of females and even fewer malesnever grow them. But why werent there any tuskless males?. This interactive module explores the phases, checkpoints, and protein regulators of the cell cycle. 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 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. %%EOF Poaching is artificially selecting for tuskless elephants who can better survive, mate, and pass on their genes to the next generation. 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. hb```f``z' B@QKm>%QXP^miq4YtnT50WS'.*^916SqKi"%df%IE400(wt@*06sx9 g! Fortunately, another research team was carrying out a collaring project to track matriarch elephants. 7. +A,2k]lJ^G@R`Y0~8!CNC!MM5V_.0mLt(P1Gh9 k1]8Ay0 Ik@ +Xndi) g[! Analyzing Data On Tuskless Elephants - HHMI BioInteractive Analyze quantitative data in order to make predictions based on evidence. Why Do Some People with the Sickle Cell Genotype Not Have Symptoms? %PDF-1.6 % Answers may vary. Africa, adaptation, Gorongosa, microevolution, scientific methodology, scientific process, selective pressure, trait. endstream endobj startxref Keep up with the latest from BioInteractive! These declines may be a part of Earths next mass extinction. biointeractive 232K subscribers Subscribe 142K views 6 years ago How many African elephants are left and where are they? Poaching brings evolutionary pressure for tusklessness. Its something I had puzzled over for so long, says Poole, co-founder and scientific director of ElephantVoices, a nonprofit science and conservation organization. After creating an account, educators can save and organize their favorite BioInteractive resources and discover recommendations tailored to their interests. 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!
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