AP Biology---genetic problem---confused!!!?

B

bella

New member
A recessive mutant allel, BLACK, causes a very dark body in Drosophila when homozygous. The wild-type (normal) color is described as GRAY. What F1 phenotypic ratio is predicted when a black female is crossed with a gray male whose father was black?

Please show or explain work so I can understand.

Thanks,
Bella
 
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