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amer157 amer157
wrote...
Posts: 29
Rep: 0 0
12 years ago
In some birds, a dominant gene is lethal.  When a homozygous dominant gene is lethal, a heterozygous condition results in short and crooked wings, and a bird that is homozygous recessive is normal in wing structure.

What is the phenotype ratio if two heterozygous short and crooked-wing birds were crossed?

A. 3 : 1
B. 1 : 1
C. 2 : 1
D. 1 : 2 : 1
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Answer accepted by topic starter
itseasyitseasy
wrote...
12 years ago
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