In ferrets, a, b, ab and o blood types are possible and are determined by the ia, ib and i alleles; the ia, ib alleles exhibit codominance. two incompletely dominant alleles for dark brown (fbr) and for blond (fbl) fur color are also found in this species. the two loci segregate independently of each other. light brown ferrets with the ab blood type mate with dark brown ferrets with the o blood type. what are the expected phenotypes and phenotypic proportions produced by this cross?