Question

suppose that you had a male mouse with black eyes and a female mouse with red eyes. you know that the allele for black eyes is dominant, and you want to determine whether the male is heterozygous. to do so, you would do a breed them and look for approxi ratio of black eyes to red test cross simulation punnett square

Explanation:

To determine if a dominant phenotype organism (black-eyed male mouse) is heterozygous, a test cross is the standard method. A test cross involves breeding the organism with a homozygous recessive individual (red-eyed female mouse, which must be homozygous recessive since red eyes are recessive). Observing the offspring ratio will reveal the male's genotype: if he is heterozygous, the offspring will have a 1:1 black-to-red eye ratio.

Answer:

test cross