Swann9122007 - Sexual Diff S l Differentiation ti ti Fall...

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S l Diff ti ti Sexual Differentiation Fall 2007 Bios 90/95 Jennifer Swann, PhD Dept Biol Sci Lehigh University Dept Biol Sci, Lehigh University
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Why have sexes?
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What determines sex? • Environment Genetics • Genetics • Hormones
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