EE barred rock cross chick

Here they are with spouting feathers.
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Nah.
A female chicken is has a WZ pair of sex chromosomes. A male is has a ZZ pair. When you cross a male and a female chicken, half of the chicks inherit W from Mum, and Z from Dad. Those chicks are WZ and female. Half the chicks inherit Z from Mum and Z from Dad. Those chicks are male, ZZ.

The important part here is that only the Z chromosome can carry barring. The W chromosome is too short; the barring gene isn't on it.

So Z^b is unbarred and Z^B is barred.

Dad's Z chromosomes don't carry barring (Z^bZ^b) Mum's does (WZ^B)

Cross WZ^B with Z^bZ^b.

Half of the chicks inherit W and Z^b. Those are female and unbarred.

Half the chicks inherit Z^B and Z^b. Those chicks are male and barred.

View attachment 1978140
Makes me want to put on some ZZ Top music!:D
 
Was their father barred, or was their mother, though? Because if the father was barred, then the pullet chicks could very well be barred.
The father was a Buff Orpington/Barred Rock cross. The mother was a Buff Orpington/Australorp cross.
Father
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Mother
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This is their son from earlier this spring.
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I don't have any baby pictures of him, sorry.
 
The father was a Buff Orpington/Barred Rock cross. The mother was a Buff Orpington/Australorp cross.
FatherView attachment 1978251 MotherView attachment 1978252 This is their son from earlier this spring.View attachment 1978254 I don't have any baby pictures of him, sorry.
'K.

So here's what I was saying earlier.

Pullet chicks inherit barring from their father. Cockerel chicks inherit barring from father and mother both. If the mother is barred and the father is not, only the male offspring will be barred.

The OP has a barred hen and a nonbarred roo. The chick is barred, therefore, he is male.
 
'K.

So here's what I was saying earlier.

Pullet chicks inherit barring from their father. Cockerel chicks inherit barring from father and mother both. If the mother is barred and the father is not, only the male offspring will be barred.

The OP has a barred hen and a nonbarred roo. The chick is barred, therefore, he is male.
We'll see. I will be surprised if it's female. Let's give it time to see who's correct?
 
We'll see. I will be surprised if it's female. Let's give it time to see who's correct?
I assume you meant to say you'll be surprised if he's male?

As for seeing who's correct, I'm sorry to keep arguing, and I know you don't believe me, but there is a multi-million dollar industry built on sexlinked barring in chickens. This is not a hypothesis that needs tested.
 
I assume you meant to say you'll be surprised if he's male?

As for seeing who's correct, I'm sorry to keep arguing, and I know you don't believe me, but there is a multi-million dollar industry built on sexlinked barring in chickens. This is not a hypothesis that needs tested.
I'm not agruing, or trying to argue. I'm voting female, you're voting male. I just want to see who's correct. There's just that 1% chance of it being female.
For example, I got 1 solid colored offspring in my crele Orpington project.
 

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