What is the colour of the f1 progeny

In Drosophila melanogaster, a gene “ebony” produces a dark body colour when homozygous, and an independently assorting gene “black” has a similar effect (that is the black and ebony body colours are indistinguishable).

a. What is the colour of the F1 progeny from a cross between homozygous ebony and homozygous black?

b. What phenotypic proportions are expected in the progeny of an F1 x F1 cross?

c. What phenotypic ratios are expected among progeny of a cross between F1 and the ebony parental type?

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