The mother is homozygous recessive and the father is homozygous dominant. Using the letter m for magical powers, what is the ratio for their offspring?

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?