= Is a tufted head on a duck a dominant gene or a resesive? =

It is Aythya fuligula, the same as the female's

None of them. But some ducks that look like they might have a mohawk are: Hooded Merganser, and Possibly a Tufted Duck.

The Hooded Merganser

It would depend on if you are speaking of wild species or domestic. There are crested ducks that have a tuft/fluff ball on their heads. They are called Crested Blue Swedish Ducks. In the wild this are no primarily blue ducks that have white tufted heads unless they are a cross between a domestic crested duck.

Tufted deer was created in 1872.