If memory serves me correctly, out of the chicks the females will get their physical characteristics from the rooster and the males from their mama. HOWEVER this doesn't seem to apply to my chickens. We had a white silkie hen that was bred by God only knows which rooster in our flock. Unfortunately something ate her and all but one of the babies. The sole survivor turned out to be a rooster. Going by my previous statement, this bird should have been white with silkie feathers. Instead, he has Barred Rock markings, normal feathers [maybe a little "fluffier" than normal, but not exceptionally so], and a funny looking patch of feathers on top of his head that I can't justify calling a topknot or a crest. I think the bottom line is that when that egg hatches, what comes out will be what God has decided. That's why I love my mixed, free range chickens. Every clutch that hatches is like Christmas and every egg a present.