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Ideally, Sebrights would all be homozygous for the rose comb gene. In practice, they often are heterozygous (because it's too much bother to cull out the heterozygotes, and/or because homozygous males can be less fertile than heterozygous males.) For purposes like showing, it doesn't matter...

In that case, I'm not really surprised that their chick came out with stripes. I think that is pretty common with a cross like that. Yes, that sounds right to me. That is something that can be difficult about sexlinks: you don't just need the main genes correct in the parents (gold father...

I don't see Ruby's breed or color mentioned in this thread. What is she? For the chicks from Quartz the Silver Sebright, can you see whether they are gold (female) or silver (male)? Or do they have too much black or other confusing coloring?

That will partly depend on how much black the chicks have. For areas that are not black, I would expect the gold/silver difference to be pretty obvious, after several chicks hatch and you can compare them. The "silver" can range from white to yellowish shades plus some grays, and "gold" can...

The gold/silver genes are on the Z sex chromosome. Females have ZW (one Z that can have a gene for gold or silver, one W that makes her female.) Males have ZZ (can have two genes for gold, or two for silver, or one of each.) Silver is considered dominant. When a rooster has both gold and...

Maybe, maybe not. If the Sebright has one gene for rose comb and one for not-rose comb, then half the chicks will have rose combs and half will have single combs. If the Sebright has two genes for rose comb, all the chicks will have rose combs. We just cannot tell by looking, whether that...