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This is not correct. I was a Genetics major in college. The two genes are linked closely on the same chromosome. When they recombine, they get spliced the opposite way. So if you take a pea comb blue egg line and cross it with a single comb white egg line in the F2 generation you might let’s say...

yes I’m familiar with genetics. I was saying in terms of longterm selection. This is assuming of course that you are ok with pea comb birds. And yes, in this case it would only tell you that most single combed birds don’t have the blue egg gene in the specific crossing program I mentioned- the...

Sorry just read your post earlier on. Sounds like both breeds had single combs so it won’t be too easy.. If it’s not too late in your breeding program to add an ameraucana in the mix that might make it easier to select for blue eggs. If also depends on what other traits you’re selecting for so...

which breeds did you use in the original cross? The pea comb gene is closely linked to the blue egg gene so If you used ameraucanas and Ayam Cemani for instance in the initial crosses, most of the pea-combed birds should have one or two copies of the blue egg gene and most of the single-combed...