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Special Topics in Human Genetics

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Special Topics in Human Genetics

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    1. Special Topics in Human Genetics

    2. X-Chromosome Inactivation Calico Cats?

    3. British Geneticist Mary Lyons… Discovered that in every cell of the female body, one X is “turned off”: BARR BODY. This is the reason why parts of the female cat appear orange while other parts of the female are brown or black. Certain X chromosomes containing those color genes are turned on.

    4. Unique Chromosome 15 Disorders Prader-Willi Syndrome Inherited from a defective chrom 15 gene. Obese, lethargic, short can’t stop eating.

    5. What is the difference? Prader Willi: from Dad Angelman’s from Mom SAME GENE! Ethics… Read page163 answer the three questions posed in the text.

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