Dun variety project

[John W Blehm]

I don't know much at all myself on the Dun genetics though.  However, I know that it can be at times sex linked, but also not...

The Dun gene and the Chocolate gene (sex-linked) can both produce a feather color/variety that is shown as Chocolate.

Ameraucana Chickens, p75

Dun, ID - Incompletely dominant. Primarily inhibits production of black pigment. Two dun alleles (ID/ID) produce khaki, aka splash dun. A Dun Ameraucana (ID/i+) X a Dun Ameraucana (ID/i+) = 25% black, 50% dun & 25% khaki.

Ameraucana Chickens, p72

Chocolate, choc - Recessive mutation. Chocolate dilutes black/eumelanin. It breeds true.

[Elijah Ensor]

Thanks for clearing that up for me, makes sense!