Sex Linkage and Pedigree Questions.docx - Sex Linkage...

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Sex Linkage Questions Use the following information to answer the next questions. _____ 1. A color-blind son has a father and mother with normal color vision. The mother's genotype must be A. X C X c B. X C X C C. X c X c D. X C X C X c
_____ 2. A heterozygous female marries a color-blind mate. The chances of their having a son with normal vision are 0
_____ 3. Both a man and his wife are color blind. The chances of their having a color-blind son are 0
_____ 4. A man and his wife have four children: two daughters with normal vision, a son with normal vision, and a color-blind son. The genotypes of the parents are probably Y C Y
_____ 5. A girl with normal vision has a color-blind brother. Both her parents have normal vision. If the girl marries a male with normal vision, the chances of their having a color-blind daughter are A. 1/2 B. 1/4 C. 1/1 D. 0

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