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lec05 - Biology 140 Fall 2007 Mistakes in Mitosis Fathers...

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Biology 140 Fall 2007 Mistakes in Mitosis - Fathers and Age 50 year old men – 2 × frequency of sperm with extra Y chromosome than 20 year olds Life expectancy: daughters of fathers > 50 years old – 74 years daughters of fathers < 30 years old – 77 years Dwarfism < 20 × higher in children of old fathers than young fathers.
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Biology 140 Fall 2007 Age Limits for Sperm Donors U.S.A. (American Fertility Society) 50 Australia 40 U.K. 35
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Biology 140 Fall 2007 Sperm Donors – who are they? France – Only men who have already had children. Britain – Medical Students (!) USA – Can shop around.
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Biology 140 Fall 2007 Resum é  of one sperm donor • Most memorable childhood experience
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Biology 140 Fall 2007 Resum é  of one sperm donor • Most memorable childhood experience: – Thrown into a swimming pool at the age of five and discovered he  could swim.
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Biology 140 Fall 2007 Resum é  of one sperm donor • Most memorable childhood experience: – Thrown into a swimming pool at the age of five and discovered he  could swim. • Funniest thing that ever happened to him:
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Biology 140 Fall 2007 Resum é  of one sperm donor • Most memorable childhood experience: – Thrown into a swimming pool at the age of five and discovered he  could swim. • Funniest thing that ever happened to him: – Lost his swimsuit half-way through a swimming race.
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Biology 140 Fall 2007 Resum é  of one sperm donor • Most memorable childhood experience:
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