In mice, Gray color is considered to be dominant over white. Show the parent genotypes, the Punnett squares and give the phenotype and genotype ratios of the P1 generation: a homzygous gray mouse and a white mouse, show the F1.

See the answer below

Explanation:

Let us assume that the gray color in mice is represented by the G allele and the white color is represented by g allele. For a cross between a homzygous gray mouse and a white mouse:

Genotype of the gray mouse - GG

Genotype of the white mouse - gg

Crossing the two parents

                  GG    x    gg

F1          Gg    Gg    Gg    Gg

All (100%) the offspring at the F1 would have the genotype Gg and would be gray in color since G is dominant over g. (See the attached image for the Punnet's square).

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