help with sex-linked and pigeon Genes

[AaronsWorld]

Originally Posted by Margarret

Aaronsworld,

I'm assuming that ee is dominant to the sex linked color since her phenotype is red. I don't know either what the teager/tiger genetics are.

Thank you again for taking the time to write all that out for me. As Terry said, you are going to be swamped with genetic questions. What birds do you have? Are you working on any specific colors or traits in your birds?

Yep exactly. They call this being epistatic. Your welcome. I kind of enjoy it as a mental exercise

I have some racing homers that I am just now breeding... second pair hatched three days ago. I am not breeding for anything in particular at the moment. I just wanted to learn about the colors/patterns and other things going on in them. I kind of got sidetracked with the genetic part of it . I also just wanted to figure out what I had and what i could play around with.

[zimmzimm3]

So would a grizzle and a blue check have sex linked babies?

[ezemaxima]

Originally Posted by zimmzimm3

So would a grizzle and a blue check have sex linked babies?

I have a blue bar hen and a brown/red grizzle and so far i have 2 silver (brown) bar cocks and not sure on the 2nd batch but it the same colors again.

Here are some pics:

Here's dad "Speck"

Here's mom "Lost" with 2nd batch (not sure what sex but most likely cocks...)

1st batch "Boo" and brother "Baron" on my signature are both cocks. "Boo" is just molting now and he is showing more white feathers compared to his picture here.

[Matt D.]

Originally Posted by ezemaxima

I have a blue bar hen and a brown/red grizzle and so far i have 2 silver (brown) bar cocks and not sure on the 2nd batch but it the same colors again.

Here are some pics:

Here's dad "Speck"

Here's mom "Lost" with 2nd batch (not sure what sex but most likely cocks...)

1st batch "Boo" and brother "Baron" on my signature are both cocks. "Boo" is just molting now and he is showing more white feathers compared to his picture here.

Quick question, alittle curious. What kind of bands are those you are using?

[AaronsWorld]

Originally Posted by zimmzimm3

So would a grizzle and a blue check have sex linked babies?

No,

Blue is sex-linked (2 copies for male one for female)

Grizzle is autosomal (2 copies either sex)
Check pattern is autosomal (2 copies either sex)

which means that grizzle and check can be given to either sex.

If it was a red grizzle hen and a blue check cock then that could work for autosexing-> all of the red offspring would be cocks they could be grizzled or any color pattern (you don't know what there is under the grizzled).

[AaronsWorld]

Originally Posted by ezemaxima

I have a blue bar hen and a brown/red grizzle and so far i have 2 silver (brown) bar cocks and not sure on the 2nd batch but it the same colors again.

they look like red bars to me? maybe I cant tell because of the pictures?

Cock: (red, red) (bar, bar) (G, G) x hen (blue) (bar,bar) (+,+)

F1-> cocks: (red, blue)(bar,bar)(G,+)
henred) (bar,bar)(G,+)

Since all the offspring are red you know that the cock is homo for red, young are het.
Cock is very probably homo for bar but since you haven't had a lot of offspring he could be het (if het you would expect 50% to be check (check,bar))....

The young look very gray to me so I guess that means they could be het Grizzle? Cock homo for Grizzle. Otherwise you would expect half of them to look different.

But either way this shows you that you need the hen to have the dominant sex-linked trait (red) in order to get an auto-sexing mating.

[ezemaxima]

Originally Posted by Matt D.

Quick question, alittle curious. What kind of bands are those you are using?

They are made of plastic spacers (tubing) already precut and i applied blue relective stickers over. They are 3/8" in diameter. Slightly bigger than what i really like to use but i've been looking for something smaller in diameter but so far i haven't had any problems of the bands getting snagged.

I'm contemplating on joing the AU membership and i would definitely pay for the extra cost for custom color bands.... i wanna keep the bands blue no matter the year is.

[ezemaxima]

Originally Posted by AaronsWorld

they look like red bars to me? maybe I cant tell because of the pictures?

Cock: (red, red) (bar, bar) (G, G) x hen (blue) (bar,bar) (+,+)

F1-> cocks: (red, blue)(bar,bar)(G,+)
henred) (bar,bar)(G,+)

Since all the offspring are red you know that the cock is homo for red, young are het.
Cock is very probably homo for bar but since you haven't had a lot of offspring he could be het (if het you would expect 50% to be check (check,bar))....

The young look very gray to me so I guess that means they could be het Grizzle? Cock homo for Grizzle. Otherwise you would expect half of them to look different.

But either way this shows you that you need the hen to have the dominant sex-linked trait (red) in order to get an auto-sexing mating.

Thanks for the info. They could be red bars... not sure. Lost and Speck second clutch for the year hatched today. I'm looking at their beak and it's all white. So maybe i'll get white babies this time.



Here's a recent pic of "BOO"

[AaronsWorld]

Originally Posted by ezemaxima

Thanks for the info. They could be red bars... not sure. Lost and Speck second clutch for the year hatched today. I'm looking at their beak and it's all white. So maybe i'll get white babies this time.

I doubt they will be white. For the most common way to get a white bird you need two copies of the recessive white allele (wh,wh). Your birds dont have this going on. They both could be het for it though... in which case you would expect 25% of them to be white.

like this

Cock (wh, +) x hen (wh, +)

F1-> 25% White (wh, wh) 50% normal colored het(wh, +) 25% normal not carrying the recessive white(+,+)

Here are some shots of my babies...

Cock and Chicks


From these parents

Cock Hen

They will all be het for recessive white. And the cock has to be het for (red, blue) to get a red colored baby and a blue colored baby.

[TAWhatley]

Originally Posted by AaronsWorld

Here are some shots of my babies...

They will all be het for recessive white. And the cock has to be het for (red, blue) to get a red colored baby and a blue colored baby.

Beautiful birds, Aaronsworld! Thank you for the photos and for your help with the genetics!

Terry

[AaronsWorld]

Your welcome


One of my favorite cocks

[ezemaxima]

Originally Posted by AaronsWorld

I doubt they will be white. For the most common way to get a white bird you need two copies of the recessive white allele (wh,wh). Your birds dont have this going on. They both could be het for it though... in which case you would expect 25% of them to be white.

like this

Cock (wh, +) x hen (wh, +)

F1->25% White (wh, wh) 50% normal colored het(wh, +) 25% normal not carrying the recessive white(+,+)

AaronsWorld,

You're right.... here they are at 1 week old

[Margarret]

Originally Posted by AaronsWorld

Yep exactly. They call this being epistatic. Your welcome. I kind of enjoy it as a mental exercise

I have some racing homers that I am just now breeding... second pair hatched three days ago. I am not breeding for anything in particular at the moment. I just wanted to learn about the colors/patterns and other things going on in them. I kind of got sidetracked with the genetic part of it . I also just wanted to figure out what I had and what i could play around with.

ArronsWorld,

That first picture with the black and white in the foreground, is that a pied? That is a beautiful bird.

Margaret

[AaronsWorld]

Ya I think that is what you call it. Or I was thinking a splash?

Both her chicks look like they have spread going on. I need to look closer to see if there is any pied/splash showing at all but I didn't think there was.

[AaronsWorld]

Originally Posted by ezemaxima

AaronsWorld,

You're right.... here they are at 1 week old

You can tell feather pigment that early? ...By the color of the down? I would love to see some pics later on in development...