Genotype of aarr

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1. In a pathway controlling flower color, a functioning copy of gene A is needed to produce enzyme A, which catalyzes the synthesis of red pigment. Without enzyme A, the flower only makes white pigment. A second gene, gene R, encodes a repressor protein that inhibts enzyme A. If a plant were to have a genotype of AaRr, what color would the flower be?

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2. Is the gene interaction in the question above is an example of dominant epistasis?

3. Consider the mouse hair color "agouti" system. If you mate together a heterozygous agouti mouse (AaCc) with another mouse that is homozygous black, what proportion of the progeny would you expect to be heterozygous agouti?
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Reference no: EM1384022

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