Heterozygous Cc Chickens express a condition called creeper?

Heterozygous Cc Chickens express a condition called creeper, in which the leg and wing bones are shorter than normal (cc). The dominant C allele is lethal when homozygous. Two alleles of a independently segregating gene determine white (W-) versus yellow (ww) skin color. From matings between chickens heterozygous for both of these genes, what phenotypic classes will be represented among the viable progeny, and what are their expected relative frequencies?

Heterozygous Cc Chickens express a condition called creeper?
6 whithe creepers


2 yellow creepers


1 yellow non creeper


3 white non creepers