A Heterozygous Fruit Fly with Normal Wings and a Gray

question 30

Multiple Choice

A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial wings and black bodies (vvbb) . If there are 800 F₁ progeny, the expected phenotypes would be:

• A) 200 normal gray, 200 normal black, 200 vestigial gray, and 200 vestigial black
• B) 400 normal gray and 400 vestigial black
• C) 800 normal gray
• D) 800 vestigial black
• E) 450 normal gray, 150 normal black, 150 vestigial gray, and 50 vestigial black

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