I was working on a mottled silkie project (still sort of am), and crossed exchequer leghorns with a very nice white white rooster.
All the F1 babies were black, crested, had super super soft feathers, 60% had 5 toes, all had black skin, though the females were blacker, and all had a walnut comb. Some may have have had beards, and some wattles, and they all had some leg feathering.
So the white was recessive
The crest, black skin, comb, feathered shanks, 5 toes were dominant or at least partially expressed with one gene.
These were super cute chickens!
The best of the roos were crossed back to 2 white unrelated silkie hens. They produced:
Mottled, white, black and partridge color
silkied and non silkied
most had 5 toes, big crests, black skin, feathered shanks.
some single combs (of course they turned up on silkied mottled birds
)
Now I am waiting for eggs from the mottled silkied x mottled silkied.
Have to say the non silkied mottled birds were stunning with huge crests, and probably nicer than the silkied!
Opps sorry - off topic