How do mutations and recombination affect a gene pool

In fruit flies, gray bodies (g) are dominant over black bodies (g), and brown pigments (n) are dominant over yellow pigments (n). each individual possesses two alleles for each trait. if a fly that is homozygous dominant for both traits is crossed with a fly that is homozygous recessive for both traits, what is the predicted genotype of the offspring.

Does masterbation affect height growth or loss of growth hormone?

Is dna the same in every cell in the human body explain your answer