F b represents the allele for black eyes (dominant) and b represents the allele for orange eyes (recessive), what would be the genotypic ratio of a cross between a heterozygous black-eyed mendalien and an orange-eyed mendalien?
Assume that in guinea pigs, dark brown fur (B) is dominant to black fur (f). If you mate a homozygous black guinea pig with a homozygous brown guinea pig, what proportion of the progeny will be black?