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July 31, 2014

Homework Help: Genetics

Posted by Anonymous on Tuesday, February 8, 2011 at 5:55pm.

A recessive eye color mutation (se) in fruit flies leading to a color called "sepia" is determined by an autosomal gene. Another recessive mutation called "brown" (bw) causes brown eye color, and is determined by an autosomal gene on a different chromosome. Gene bw, when recessive homozygous, is epistatic to se or se+. Cross a male (whose true-breeding father had sepia eyes and true breeding mother, brown eyes) to a female of the same genotype. Give scheme of cross ratios of resulting phenotypes.

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