10. a white mouse whose parents are both white produces only brown offspring when mated with a brown mouse. the white mouse is most probably

A white mouse whose parents are both white, a recessive trait, produces only brown offspring when mated with a brown mouse. The white mouse is most probably Homozygous recessive. In genetics if a trait that will appear in the offspring if one of the plants contributes it is the dominant trait. For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent. 

Cis the