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Suppose That the "Fabulous" Phenotype Is Controlled by Two Genes

question 36

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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. 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 F<sub>1</sub> 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 What will be the phenotype(s) of the F1 offspring of a true-breeding "fabulous" father and a true-breeding "plain" mother (aa bb) ?


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