a) a mating of an albino (White) guinea pig and a black one gave 6 borwn, 3 black and 3 white offspring in the f2 generation. what were the genotypes of the albino (Cw) and the black (Cb) parent guinea pig respectively?

b) multiple Alleles control the intensity of pigment in mice. The gene D1 designates full color, D2 designates dilute color and D3 id deadly when homozygous. the order of dominance is D1>D2>D3. when a full color male is mated to a dilute female , the offspring are produced in the following ratio: two full color to one dilute to one dead. what are the genotypes of the parents?