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Question: 11 the most common form of color blindness in humans...

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11 The most common form of color blindness in humans results from X-linked recessive alleles. One type of allele, call it cb results in defective red perception, whereas another type of allele, call it ci, results in defective green perception. A woman who heterozygous cblcbk and a normal male produce a son whose chromosome constitution is XXY. What are the possible genotypes of t his child under each of the following circumstances? (a) The nondisjunction took place in meiosis I in the mother. (b) The nondisjunction took place in the cb-bearing chromosome in meiosis II in the mother. (c) The nondisjunction took place in the cbe-bearing chromo- some in meiosis II in the mother

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