Every offspring must get A. one-half of their DNA from each of the parents.
B. a complete set of DNA from each of the parents.

A

Explanation:

the mother gives half through the egg and the father gives half through the sperm

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )