Swann9122007

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

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Sexual Differentiation all 2007 Fall 2007 Bios 90/95 Jennifer Swann, PhD ept Biol Sci Lehigh University Dept Biol Sci, Lehigh University
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Why have sexes?
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What determines sex? • Environment enetics • Genetics • Hormones
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hat causes these What causes these differences? Environment…? The true story of J O H N /J O A N y John Colapinto By John Colapinto The Rolling Stone, December 11, 1997. Pages 54-97 After suffering the complete loss of his penis to a botched circumcision when he was 8 months old a sex-change operation was performed that involved clinical castration, genital surgery and a 12-year program of social, mental and hormonal conditioning.
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Or Genotype? Men and women are milar in genetic similar in genetic make up except for 1 chromosome…. Professor Victor Axiak Forget The Budget! - WHAT ABOUT SEX? Dossier Science 27 November 2002 http://www.maltastar.com/pages/msDossierDetailN.asp pp g p ?id=6918&po=2
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The X and Y chromosome • Women have 2 X • Men have X and Y • Men and women differ by about 1% of their genetic make up
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Does Genotype alone confer Phenotype?
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Swann9122007 - Sexual Diff S l Differentiation ti ti Fall...

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