Sapling plus in cats, curled ears result from an allele, cu, that is dominant over an allele, cu, for normal ears. black color results from an independently assorting allele, g, that is dominant over an allele for gray, g. a gray cat homozygous for curled ears is mated with a homozygous black cat with normal ears. all the f1 cats are black and have curled ears. what phenotypes and proportions are expected from the two crosses?