Test: AP Biology

1.

A breeder wants to know her dog’s genotype. The breed she works with comes in two varieties: black and yellow. Black is dominant to yellow. She breeds her black dog with a yellow dog and gets a litter of three black dogs and three yellow dogs. What is the genotype of the parental black dog?

Unable to determine from the given information

Homozygous recessive

Homozygous dominant

Heterozygous

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