Use this information for questions 19-21 Two mice breed. The male is heterozygous for the dominant traits of black fur and active behavior but is homozygous recessive for light eyes. The female mouse is heterozygous for dark eyes, has white fur, and displays lazy behavior. How many types of gametes does the male mouse produce?

The male mouse would produce four possible combinations of gametes in equal proportions which includes: BAd, Bad, bAd and bad.

Explanation:

let B- black fur, A- active behaviour and D-dark eyes

The male mouse is heterozygous for dominant traits of black fur and active behavior but is homozygous recessive for light eyes.

Thus the genotype will be: BbAadd

The female mouse is heterozygous for dark eyes, has white fur, and displays lazy behavior. thus the genotype wil be: bbaaDd

The male mouse would produce four possible combinations of gametes in equal proportions which includes: BAd, Bad, bAd and bad  

a. to encourage apoptosis

the answer is a) cell division.

hope this !