Another BIOLOGY ?

Genetics as it applies to evolution, molecular biology, and medical aspects.

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Another BIOLOGY ?

Post by glxvr6turbo » Wed Nov 28, 2007 3:27 am

1. A sex linked gene 'c' produces red-green color blindness in humans. A normal woman whose father is color-blind marries a color-blind man. What genotype(s) are/is possible for the mother of the color-blind man she has married?

a. What are the chances that the first child from this marriage will be a color-blind boy?

b. Of the daughters of these parents, what fraction are expected to be color-blind?

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Post by woolleyy » Wed Nov 28, 2007 12:21 pm

1. The mother must carry the colour blindness gene

a. 1/1

b. 1/4

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