What color kittens will you get if breed a white cat with grey cat?

The color of the kittens will depend on the genotypes of the parent cats. If the white cat is homozygous for the white gene (WW) and the grey cat is homozygous for the grey gene (GG), then all of the kittens will be grey (Gg). This is because the grey allele is dominant over the white allele.

However, if the white cat is heterozygous for the white gene (Ww) and the grey cat is homozygous for the grey gene (GG), then half of the kittens will be grey (Gg) and half of the kittens will be white (Ww). This is because the white allele is recessive to the grey allele, so only kittens that inherit two copies of the white allele will be white.

Finally, if the white cat is homozygous for the white gene (WW) and the grey cat is heterozygous for the grey gene (Gg), then all of the kittens will be grey (Gg). This is because the grey allele is dominant over the white allele, so all kittens will inherit at least one copy of the grey allele.