CH 12 Second Half - Chromosomes and Human Genetics Chapter...

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Chromosomes and Human Genetics Chapter 12 (Additional Topics: no additional readings, but focus on THIS lecture material for exam questions)
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Chromosomes & Cancer
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Philadelphia Chromosome
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Re-examining Mendel’s Work
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Homologous Chromosomes
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Alleles 0
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a b c a b c A B C A B C A B C a b c a b c b c A A B C B C a 0 How Crossing Over Creates New Allele Combinations in Gametes
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Sex Chromosomes 0
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Karyotype Preparation - Stopping the Cycle 0
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Karyotype Preparation 0
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0
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0 Karyotype.swf (use Apple Quicktime to open and view)
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Sex Determination X X Y X XX XY XX XY X X Y X x x eggs sperm female (XX) male (XY) 0
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0 Sex Determination.swf (use Apple Quicktime to open and view)
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The Y Chromosome 0
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Effect of Y Chromosome 10 weeks Y present Y absent 7 weeks birth approaching appearance of structures that will give rise to external genitalia appearance of “uncommitted” duct system of embryo at 7 weeks Y present Y absent testis ovary testes ovaries 0
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The X Chromosome 0
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0 X X X Y x Gametes: 0 Discovering Linkage
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