What is an allele that contributes to the phenotype if 1 or 2 copies are present

Select the correct answer from each drop-down menu proteins are

In guinea pigs, black fur (b) is dominant over white fur (b). cross a heterozygous (hybrid) black guinea pig with a homozygous (purebred) white guinea pig. complete a punnett square, identify the genotype(s), phenotype(s), and probability (% and fraction) that the offspring will be black and white?

Which organelle stores most of a cell’s dna?