We know, too, that orange cats are most often male ... cause melanocytes to get stuck producing the lighter pigment, but the gene encoding MC1r doesn’t seem to explain where cats’ ginger ...

In cats, the fur pigmentation gene is X-linked, and depending on which copy of the X chromosome each cell chooses to leave active, either an orange or black coat color results. X inactivation only ...

The strain carries a sex-linked pigment gene that makes XX females white and XY males orange-red. The sex-determining region was then mapped by recombination between it and the pigment loci ...