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Biology/Molecular and Cellular Biology
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Dihybrid Cross Phenotypic Ratios

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Two heterozygous mice are crossed. The allele A for black coat color is dominant over the allele a for white coat color, and the allele B for a solid coat is dominant over the allele b for a spotted coat. The results of the cross are shown in the table. What proportion of the resulting offspring will have black, spotted coats?

A

0.063

B

0.25

C

0.563

D

0.375

E

0.188

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