I got these from tractor supply. the only one "breeding" these was the supplier, Hoovers hatchery....
That's what I meant. I think someone at the hatchery developed them, or someone else developed them and then sold breeding stock to the hatchery who now breeds them.
feather color is a phenotype and im basing what i said on phenotypes, not genotypes. Its not as accurate as genotypes but it certainly has something to do with Mendelian genetics and possibility.
Not really, as regards the feather color.
Yes, feather color is a phenotype. But it is pretty much useless when trying to predict egg color.
Some genes are linked (they tend to be inherited together, because they sit next to each other on the same chromosome: so a chick that inherits a particular gene from that parent also inherits the linked gene.) Some genes are not linked. The gene for blue eggs is NOT linked to any genes that are involved in making a chicken with blue feathers.
Im also assuming that Hoovers is TRYING to produce blue eggers...and that they don't care about the rest of the traits?
Yes, I am assuming that too.
random crossing would produce some that look like leghorns and since I don't see that.....I expect phenotype represents the cross design and favors the Easter egger and the blue egg.
There is a link between the pea comb gene and the blue egg gene. When you cross Ameraucana and Leghorn, you get chicks with one copy of pea comb/blue egg linkage (from the Ameraucana) and one copy of not-pea/not-blue-egg (from the Leghorn). If you breed those birds among themselves, you'll get some with pea combs and some with single combs. The ones with pea combs will reliably lay blue eggs, and the ones with single combs will reliably lay not-blue eggs. So of course they'd cull the single comb birds, and keep breeding the pea comb birds.
But I don't think they would be paying attention to any other traits, just the blue egg gene and the pea comb that can be used as a marker for it.
some have pea combs, some have single combs...
I think you probably have more than one kind of chicken there.
The ones with pea combs are probably Pairie Bluebell Eggers who will lay blue eggs.
Blue-feathered ones with single combs are more likely to be Andalusians who lay white eggs or Sapphire Gems who lay brown eggs.