I know about B/B/S but what about B/B/Cuckoo?

[Henk69]

Quote:
No, no, no.
There isn't enough salt!

So are you saying I'm wrong? If so, please enlighten us, it would be more helpful than your previous comment.

You have cuckoo as
1. recessive
2. autosomal (then sexlinked).

explanation:
1. A black chicken can not carry cuckoo (barring). Barring always shows. Cuckoo is dominant. Roosters can have 2 doses, which gives a lighter cuckoo than the ones with 1 dose. The latter are similar in shade to the females.
2. A female chicken can not be split for cuckoo. She has a gene for cuckoo or she has a gene for not-cuckoo, never both. Cuckoo is sexlinked.

I don't mind you telling us your theories, but to the people that don't know yet how it actually works, it must be made clear that what you say is wrong. These things can be spread like weeds, you know...

Especially when they are worded so elegantly

 

[nzpouter]

Quote:
1. all cuckoo cockerel, black pullet.

2a. cuckoo (dark) roo x cuckoo hen = all cuckoo cockerel (half light, half dark), pullets 50% cuckoo, 50% black.

b. cuckoo (light) roo x cuckoo hen = all light cuckoo cockerel, all cuckoo pullet.

3. cuckoo (dark) roo x blue hen = blue cuckoo, dark cuckoo, blue and black in both sexes.

cuckoo (light) roo x blue hen = cuckoo and blue cuckoo in both sexes.

 

[Germaine_11.20]

Thank you, thank you!

 

[Germaine_11.20]

Quote:
1. all cuckoo cockerel, black pullet.

2a. cuckoo (dark) roo x cuckoo hen = all cuckoo cockerel (half light, half dark), pullets 50% cuckoo, 50% black.

b. cuckoo (light) roo x cuckoo hen = all light cuckoo cockerel, all cuckoo pullet.

3. cuckoo (dark) roo x blue hen = blue cuckoo, dark cuckoo, blue and black in both sexes.

cuckoo (light) roo x blue hen = cuckoo and blue cuckoo in both sexes.

That really helped thank you. And now I need to go out and look at the birds again.

I am still a little confused so let me apologize for that now. If the breeding of a black roo to a cuckoo hen results in cuckoo roos and black pullets-- wouldn't the pullet have a cuckoo gene due to the cuckoo parentage of the father roo?

Or doesn't he pass it along due to the sex link?
I didn't realize that genes could do that.

I have one dark cuckoo hen. Would she be a blue cuckoo due to the dark color? The other 3 are roos and the color difference is notable. 2 Light roos and then 1 dark roo like the hen.

Wait.... I think I get why she is dark. She just carries the cuckoo gene. She can't be a light cuckoo because that would take two cuckoo genes and she can't carry two????? So a cuckoo hen will always be dark cuckoo? Is this correct..... Maybe....???

 

[Henk69]

Quote:
You mean of the mother?
No, the mother has one cuckoo gene that only can be passed to her sons. The absent gene is "passed" to her daughters.
This also determines the gender of the daughters (that they didn't get the big sex chromosome from the mother).

Wait.... I think I get why she is dark. She just carries the cuckoo gene. She can't be a light cuckoo because that would take two cuckoo genes and she can't carry two????? So a cuckoo hen will always be dark cuckoo? Is this correct..... Maybe....???

Yes. The female cuckoos are hemizygous. 1 copy is all they can get, half of the complete set.​

 

[shelleyd2008]

Quote:
So are you saying I'm wrong? If so, please enlighten us, it would be more helpful than your previous comment.

You have cuckoo as
1. recessive
2. autosomal (then sexlinked).

explanation:
1. A black chicken can not carry cuckoo (barring). Barring always shows. Cuckoo is dominant. Roosters can have 2 doses, which gives a lighter cuckoo than the ones with 1 dose. The latter are similar in shade to the females.
2. A female chicken can not be split for cuckoo. She has a gene for cuckoo or she has a gene for not-cuckoo, never both. Cuckoo is sexlinked.

I don't mind you telling us your theories, but to the people that don't know yet how it actually works, it must be made clear that what you say is wrong. These things can be spread like weeds, you know...

Especially when they are worded so elegantly

Thank you for your explanation, that is much more helpful

 

[nzpouter]

Quote:
the pullet will not have cuckoo gene as the roo is a black.

correct on the last bit, a hen can only have 1 dose of cuckoo... she can be lighter if she's a blue cuckoo.

 

[Germaine_11.20]

I really appreciate everyones help with understanding this, Thank you very much!

 

[becky3086]

I am glad for this post as well, because I thought I knew what cuckoo x black would make but I didn't know it all.

 

[Germaine_11.20]

Good Becky, I am glad you could get help too. I am going to go to the genetics calculator and use the information to help me surf around it and learn how they came up with the answers.

It is a start to learning it and with the answers to help maybe it will start to make sense.