If both chicks were from buff lace x black/blue, then 3/4 of their chicks will be white. 1/4 will be pure dominant white, 1/2 single dose white, and 1/4 no white. I keep forgetting important details. Not all of the chicks will be solid white at hatch, 1/4 of them will have partridge down at hatch & this will be independent of the white chick ratio. So there will be some "brown chickens with white details" and "brown chickens with black details".
There's another thing about dominant white, it does not cover up red/gold pigments too good. Red pyles are a perfect example of this. The black on body of roosters is all removed, leaving the red on hackles, duckwing patch and saddles. So is your buff laced.. the black lace is turned to white, leaving the gold centers mostly unaffected.
Some of the white chicks might show some buff on them at maturity. That's because there isn't really a single gene for 'solid black'- solid blacks have either one of the two main genes for 'mostly black' plus melanizers that help turn them solid black.
So if your goal is perfectly solid white birds and have problems of buff/red/brown showing up on the whites, it would actually be good idea to breed some of the chicks to a solid black chicken, especially if you have a solid black rooster. but either a black or blue hen with no off color anywhere on them will work in this goal. If you are stuck with blacks with color on them, it is better to use ones with white lacing on necks than brown lacing-remember DW doesn't cover up red pigments too well.. so if the bird 'leaks' white, you can't see it on a dominant white chicken but if it leaks brown/red/buff you will see it.
Edited by Kev - 3/29/12 at 9:34pm
