Rir x Bpr

[Gibson786]

I have a rhode island red rooster and a barred Plymouth rock hen and I incubated the eggs and originally thought I was going to get black sex linked but they come out reddish brown and now i have no clue what I've created

 

[wilkinsfarm2020]

From what I remember the mom Carrie's the barred gene 2x

I'm thinking these two cuties are most definitely girls!

I believe if it's black and barred their males if any other color its female (from what I remember)

 

[wilkinsfarm2020]

so I have three barred rock +austrlorp(dad was australorp) and all 3 of my barred boys are all males.

 

[wilkinsfarm2020]

Here's 2 of my 3.

 

[BlackIce]

when crossing a rir and barred rock there are different variations and colors that correspond the chick to its sex. when a rir rooster and barred rock hen are crossed the result is known at a black sex link. female chicks will be all if not mostly black and male chicks will be black with a spot on their head. i believe the chick you have is either a very very rare case or the egg you hatched came from a different hen... a red sex link is a cross with a rir roo but different hen variations and barred rock isn't one of them.

 

[hysop]

Here is a really good thread on creating Sex Links!

https://www.backyardchickens.com/threads/sex-linked-information.261208/

 

[Gibson786]

when crossing a rir and barred rock there are different variations and colors that correspond the chick to its sex. when a rir rooster and barred rock hen are crossed the result is known at a black sex link. female chicks will be all if not mostly black and male chicks will be black with a spot on their head. i believe the chick you have is either a very very rare case or the egg you hatched came from a different hen... a red sex link is a cross with a rir roo but different hen variations and barred rock isn't one of them.

Its the only hen I have so I'm positive it come from her. I have 6 more about to hatch out from her I'll post pics of them aswell once they hatch

 

[sylviethecochin]

Are you certain that she's a Plymouth Barred Rock and not a crossbreed? She certainly doesn't look pure, by body shape. More like something a bit heavier, like an English Orpington.

If she is a crossbred, then she might carry a pattern gene that is not extended black (the dominant gene that makes black chickens their solid black colour. Genetic shorthand is E). That would give her chicks a 50% chance of not inheriting extended black at all, and thus, possibly not being black (depending on what pattern gene they inherited from her instead).

No matter what, if she's the only possible mother, and she's barred, then her male chicks will be barred. Which means that they will have headspots. Since they appear a very dark colour in that picture, you should easily be able to identify a headspt.

 

[sylviethecochin]

a red sex link is a cross with a rir roo but different hen variations and barred rock isn't one of them.

Yes, but it should, theoretically, make a black sex link.

 

[sylviethecochin]

the mom Carrie's the barred gene 2x

No. She carries the barred gene once, which is why it is a sexlinked gene. It's linked to the sex chromosome. Males carry two long sex chromosomes (Z/Z); females carry a single long sex chromosome and a short sex chromosome (Z/W). The short (female) sex chromosome is missing the spot for the barred gene, because it's too short to carry it.

And so, when you cross a male unbarred (Z^b/Z^b) with a female (Z^B/W), half of the chicks inherit the W chromosome from Mum. That chromosome doesn't have barring, and neither does Dad's Z^b, so they are unbarred. Because they inherited the female sex chromosome, they are female.

The male chicks, though, inherit Z^B from Mum, and are barred. 1x barred.

Interestingly, mammals have the opposite arrangement, with males carrying the short chromosome (fewer genes). Which is why I tell my brother he's genetically simple, and giggle to myself.