Suppose that the "fabulous" phenotype is controlled by two genes, A and B, as shown in the diagram below.Allele A produces enough enzyme 1 to convert "plain" to "smashing." Allele a produces no enzyme 1.Allele B produces enough enzyme 2 to convert "smashing" to "fabulous." Allele b produces no enzyme 2.The A and B genes are both autosomal and assort independently.
What will be the phenotype(s) of the F1 offspring of a true-breeding "fabulous" father and a true-breeding "plain" mother (aa bb) ?
A) All "plain"
B) All "smashing"
C) All "fabulous"
D) "Plain" females and "fabulous" males
E) "Fabulous" females and "smashing" males
Correct Answer:
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