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    Science Behind the Lesson
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    The Science Behind Parthenogenesis: Interesting things happen when meiosis goes “wrong”
    Parthenogenetic reproduction is a fascinating, complex topic.  This article accompanies “Why Meiosis Matters: The case of the fatherless snake.” It summarizes the basic information an introductory biology or genetics instructor...

    Courses: Cell BiologyCell Biology GeneticsGenetics Introductory BiologyIntroductory Biology

    meiosismitosissex determinationAsexual reproductionParthenogenesis
    Science Behind the Lesson
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    The Science Behind the ACTN3 Polymorphism
    A common polymorphism in the alpha-actinin-3 (ACTN3) gene results in the lack of ACTN3 protein expression in fast twitch muscle fibers in ~16% of the human population (1). This genetic change has been linked with muscle performance in humans (2)...

    Courses: Anatomy-PhysiologyAnatomy-Physiology GeneticsGenetics

    protein structure and functionhuman genetic variationskeletal muscle physiology
    Science Behind the Lesson
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    Science Behind the Lesson: It's a Bird! It's a Plane! It's Biomechanics!
    Active flight is a specialized mode of movement found in insects, birds, and mammals. The anatomy, morphology, physiology, and ecology of flying taxa has changed over evolutionary time. Researchers have proposed several hypotheses about the...

    Courses: Anatomy-PhysiologyAnatomy-Physiology EcologyEcology

    EvolutionecologybatphysiologyAnatomybiomechanicsbirdFlightinsect