Albinism

Albino is an unstable dominant mutation that is homozygous fatal.

Any showing albino is Xx.

xx is wild-type

in an albino to albino breeding, approximately 33% of offspring are albino. Why the weird number? Any living baby is either Xx, Xx or xx, but the mutation has a tendency to mutate back to the normal condition in 50% of cases. This leaves a 1:3 chance of getting an albino.

In a breeding of albino to non albino, approximately 25% of babies are affected