In Drosophila,the Two Genes W and Sn Are X-Linked and 25

question 50

Multiple Choice

In Drosophila,the two genes w and sn are X-linked and 25 map units apart.A female fly of genotype w⁺sn⁺/w sn is crossed to a male from a wild-type line.What percent of male progeny will be w⁺sn?

• A)0%
• B)12.5%
• C)25%
• D)37.5%
• E)50%

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