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- #21
Hmm. well, I guess since 6 of 6 chicks laid blue, I wouldn't really care! LOLI might be misunderstanding what you’re saying still... but no.
To lay a blue egg the bird only needs one copy of the blue egg gene
Let’s say we cross a CLB rooster with a known blue egg layer...
if we hatch 6 eggs from that pairing and all 6 end up being pullets and we wait and find out that they all lay blue eggs, we’ve not proved anything about either of the parents carrying two copies of the blue egg gene.
and actually we haven’t even proved that both parents carry one copy of the blue egg gene, because chance says that we could have just got lucky and ended up with six pullets that received one copy of it from the same parent.
if we do the same cross and one or more of the resulting pullets ends up laying a white egg then
we can know that both parents are heterozygous
But let’s say one parent is homozygous ( 2copies) and one is heterozygous... then all the pullets will lay blue eggs, but we still don’t know which parent is homozygous
So that was what I was asking, was how can you tell that either parent carries two copies of the blue egg gene? I’m not sure that you can.
I always assumed that if both lay blue you will get blue.
For me, in my crosses, I seem to achieve a lot of blue. I am quickly running out of brown egg layers.... but now I have marans so they can help out with that.
