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Instructional Video3:40
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\n\"The\n\n
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\nHoward Hughes Medical Institute\n
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\nThe Mammalian Molecular Clock Model\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nAnimals don't read clocks, so how do they know when it is time for eating, sleeping, and other cyclical needs? Viewers watch an animation of the genes and the molecular clocks inside most mammals. They compare the difference in wild...\n
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Instructional Video6:26
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\n\"How\n\n
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\nVeritasium\n
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\nHow Long Will You Live?\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nCells only divide a specific number of times before they die at the end of the division cycle. This molecular clock is the culprit of aging. A video explores the concept with a trip to New York to discuss the phenomenon with a leading...\n
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Instructional Video4:20
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\n\"How\n\n
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\nTED-Ed\n
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\nHow Plants Tell Time\n

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\n\nFor Students\n\n8th - 11th\n\nStandards\n
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\nCan someone really have a \"biological clock\"? Discover why many organisms on earth have an inherent awareness of where they are in the day's cycle.This video discusses animal adaptations, the earth's revolutions, and how light and...\n
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Lesson Plan
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\n\"Never\n\n
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\nCurated OER\n
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\nNever Say Die: The CLock of Life\n

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\n\nFor Teachers\n\n5th - 9th\n
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\nLearners explore ways to turn back the genetic clock. They explore cells and mitosis. Students participate in an activity to create a flip book that will animate the process of mitosis. They explain each stage of mitosis.\n
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Instructional Video2:02
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\n\"Measuring\n\n
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\nHoward Hughes Medical Institute\n
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\nMeasuring Circadian Activity in Drosophila\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nHow many hours should be in a day? One species of drosophila naturally prefers a 24.5 hour day, while another strongly prefers a 19-hour day. An animation and graph share data from each of these species when exposed to the typical light...\n
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Instructional Video9:11
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\n\"When\n\n
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\nPBS\n
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\nWhen Insects First Flew\n

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\n\nFor Students\n\n6th - 12th\n\nStandards\n
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\nInsects developed wings and the ability to fly earlier than any other animal—when exactly did that happen? Scientists know this fact but struggle to explain when insect wings developed and how this entirely new structure appeared. PBS...\n
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Lesson Plan
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\n\"Biotechnology/Bioinformatics\n\n
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\nCurated OER\n
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\nBiotechnology/Bioinformatics Activity\n

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\n\nFor Teachers\n\n11th - 12th\n
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\nStudents demonstrate the genetic principles of Heredity. They discover that each species has a unique Genetic fingerprint and that people can use \"Genetic fingerprints\" to solve a number of problems. They discuss examples of uses of DNA...\n
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Worksheet
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\n\"What\n\n
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\nCurated OER\n
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\nWhat Should You Know about Classification?\n

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\n\nFor Students\n\n6th - 12th\n
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\nMany learners have a tough time picking out pertinent information from a text or in class. Sometimes, all it takes is a study/reading guide to show them the way. The worksheet here focuses on taxonomy and classification, including...\n
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Lesson Plan
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\n\"Lactose\n\n
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\nCurated OER\n
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\nLactose & Lactase\n

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\n\nFor Teachers\n\n7th - 12th\n
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\nStudents examine the characteristics of lactose and lactase.  In this enzyme lesson students study the lactose in milk and its rate of dissolution.\n
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Handout
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\n\"Pbs\n\n
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\nPBS\n
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\nPbs Learning Media: Molecular Clocks: Proteins That Evolve at Different Rates\n

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\n\nFor Students\n\n9th - 10th\n
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\nIn this graphic and article from \"The Human Evolution Coloring Book\" by Adrienne Zihlman, four different proteins from humans and horses are compared and the reasons each protein evolves at its own characteristic rate are discussed.\n
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Handout
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\n\"Scitable:\n\n
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\nNature Research\n
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\nScitable: Evolutionary Genetics\n

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\n\nFor Students\n\n9th - 10th\n
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\nA collection of articles on evolutionary genetics focusing on the topics of phylogenetics, mutation and molecular population genetics, the genetics of speciation, genome evolution, and evolution and development. Learn how to read a...\n
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Unit Plan
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\n\"Ck\n\n
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\nCK-12 Foundation\n
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\nCk 12: Episd: History of Life\n

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\n\nFor Students\n\n9th - 10th\n
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\n[Free Registration/Login may be required to access all resource tools.] Students will explore ways to study the past to learn about the history of life. Understand how fossils, DNA analysis, and molecular clock help researchers study...\n
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\n\nGet Free Access\n\nSee Review\n
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Lesson Plan
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\n\"Access\n\n
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\nNational Health Museum\n
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\nAccess Excellence: Molecular Biology/primate Phylogeny\n

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\n\nFor Teachers\n\n9th - 10th\n
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\nThis lesson plan involves comparison of amino acids to create a phylogenetic tree of primates. Students will also use other species information to draw conclusions about evolutionary relationships.\n
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Lesson Plan
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\n\"Access\n\n
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\nNational Health Museum\n
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\nAccess Excellence: Making a Phylogenetic Tree Lesson Plan\n

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\n\nFor Teachers\n\n9th - 10th\n
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\nConstructing phylogenetic trees may be a daunting task for students, but this lesson plan is a simulation of what molecular biologists must do to determine relationships. This plan is for students who have a good grasp of DNA structure...\n
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Audio
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\n\"Science\n\n
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\nScience Friday Initiative\n
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\nScience Friday: Monarch Migration Molecular Mechanism\n

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\n\nFor Students\n\n9th - 10th\n
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\nWhat drives monarch butterflies to undertake a mass migration, traveling thousands of miles to pine groves in Mexico? New research takes a look at a complex circadian clock mechanism in the butterfly brain, a molecular tool that allows...\n
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\n\"Khan\n\n
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\nKhan Academy\n
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\nKhan Academy: Molecular Targets of Antiretroviral Therapies\n

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\n\nFor Students\n\n9th - 10th\n
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\nRead this passage and study the graphics to complete a five-question quiz related to the viral life cycle and antiretroviral therapies for HIV/AIDS.\n
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Lesson Plan
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\n\"Nhm:\n\n
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\nNational Health Museum\n
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\nNhm: Amino Acid Sequences Show Evolution\n

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\n\nFor Teachers\n\n9th - 10th\n
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\nThis lesson plan focuses on differences in the amino acid sequence of hemoglobin and myoglobin proteins. They use the number of differences to create a phylogenetic tree.\n
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\n\nGet Free Access\n\nSee Review\n
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Unit Plan
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\n\"Ck\n\n
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\nCK-12 Foundation\n
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\nCk 12: Biology: History of Life\n

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\n\nFor Students\n\n9th - 10th\n
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\n[Free Registration/Login may be required to access all resource tools.] This comprehensive lesson by CK-12 explains how scientists learn about the past by examining and dating fossils.\n
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\n\nGet Free Access\n\nSee Review\n
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