Some Genetics Questions

you have too many crosses and breeds mixed into the batch to ever be 100% sure on the parentage of that chick. sorry...

 

The first chick is carrying color from the BBR OEG and the Wheaten Ameraucana, that's where the fawn breast comes into play. Someone's got dominant white, splash, or khaki going on, - That's where the rest of the bodily color comes from.

Mottling is recessive, so the white you're seeing in your second chick is actually just from black coloration. Looks to me though like Self-Blue x Serama. The Serama parent I'm guessing then is a Wheaten or Duckwing type, as both are recessive to black (Self-Blue, which is recessive, making the offspring black) As the chick matures it should get some leakage on its hackles/saddle/wings.

If the mottled cross were the parent, the chick would have more leakage, most already showing by now, and possibly even simply be BBR in color.

 

Quote:X2

 

Quote:Where in the wide wide world of poultry did you get this answer?
There is such a mess in the potential parentage and none of what you state do i see in these birds.. When you have the genetic possibilities of a EE and a Serama in the mix and all the potentials of a Duccle of questionable parentage as well good luck sorting it out.

 

Quote:So explain to me then why you think I'm wrong? I certainly don't fully doubt you, but I want an explanation. I'm not saying I'm absolutely right either. Yes, that much mixing makes it very hard to track down what colors come from where, but I'm sorry, the first chick shown has coloring that just can't be made by much, and the duckwing from the BBR OEG way back there is one part of it. The only other part is the Wheaten of the Ameraucana, or something like Duckwing from the unknown mutt possible parent. Doesn't make it an EE, just makes it carrying at least one copy of duckwing (e+)

The black chick I specifically mentioned an unassurance, since the Serama could have a lot of different things in it but either of the two other parent choices will indeed black it out. I've seen a LOT of Seramas with an e^Wh base or a e+ base, both of them turn black with slight leakage when crossed with E/E. And so as I mentioned, the chick is gonna feather out black with some sort of leakage, and the amount may vary, and there's no full way of what it will tell us, however, it doesn't have feathered legs or the influence of the OEG's BBR color which would turn it any color but black, so, there's why my theory comes in.

My two cents, and again I'd love to know why I'm wrong if I am.

 

Quote:So explain to me then why you think I'm wrong? I certainly don't fully doubt you, but I want an explanation. I'm not saying I'm absolutely right either. Yes, that much mixing makes it very hard to track down what colors come from where, but I'm sorry, the first chick shown has coloring that just can't be made by much, and the duckwing from the BBR OEG way back there is one part of it. The only other part is the Wheaten of the Ameraucana, or something like Duckwing from the unknown mutt possible parent. Doesn't make it an EE, just makes it carrying at least one copy of duckwing (e+)

The black chick I specifically mentioned an unassurance, since the Serama could have a lot of different things in it but either of the two other parent choices will indeed black it out. I've seen a LOT of Seramas with an e^Wh base or a e+ base, both of them turn black with slight leakage when crossed with E/E. And so as I mentioned, the chick is gonna feather out black with some sort of leakage, and the amount may vary, and there's no full way of what it will tell us, however, it doesn't have feathered legs or the influence of the OEG's BBR color which would turn it any color but black, so, there's why my theory comes in.

My two cents, and again I'd love to know why I'm wrong if I am.

Illia, I'm not saying you are wrong I question how anyone can determine anything based on the mixed up mess.

After reading through the potentails and the way I read it indicates that there is no Bb Red OE just a bird that had some OE in its genetic make up, black mottled d'uccle/ black silkie mother and a black mottled d'uccle/black cochinX BB red oegb sire.
secondly the "Americauna" is a rooster and thought to be wheaton based on what an apperanance? Who is to say it actually anything other than a male bird with a wild type partridge appearance.
I don't feel like getting a debate over something that doesn't matter but I do not beleive that anyone can determine who did what with this mess...

 

Quote:What you have in your mini-bird is called quantitative trait loci. He inherited enough DNA from both parents that inhibits growth to create the smaller size.

It could be both parents carried a recessive gene that caused him to be even smaller.

Or it could be he inherited a piece of DNA from the serama that inhibits the growth genes which caused him to be smaller ( not enough growth hormone or insulin growth factors ). The serema hen would have had additional DNA that depressed the inhibition of growth allowing her to grow more ( she produced more growth hormones or insulin growth factors) therefore she is larger than her son.

Could be all kinds of possibilities that inhibit growth. Could be a pituitary gland problem, growth hormone releasing factor problem, a thyroid/thyroxine problem or metabolic problem associated with amino acid uptake. It is the DNA that would regulate the processes involved in growth

Tim