Egg Color

[trainman]

I understand that egg color is determined by breed of chicken. A Barred Rock produces brown eggs and a Brown Leghorn produces white eggs. How much, if anything, does the rooster have to do with it? If one breeds a Brown Leghorn rooster with a Barred Rock hen what are the chances the female offspring will produce white eggs or brown eggs?
trainman

 

[donrae]

Roosters contribute 50%.

There are genes for white, brown and blue eggs. Green eggs are a combo of brown and blue.

Brown trumps white, so the cross you described won't give any white egg layers, they'll lay a lighter brown egg.