Yellow Body Star finch

[stavros01]

Hi,

does a genetic forecast exists for Star finches?
Or what mutations do i have to combine to get a Yellow body Star Finch?


Regards
Gustavo

[Crystal]

I have not seen a genetic forecast for star finches (yet).

Yellow body appears to be a combination of a bird that is both Cinnamon and Fawn at the same time.

From what I can tell:
Cinnamon appears to be sex-linked recessive. (Z^c)
Fawn appears to be autosomal recessive. (ff)

So a yellow-body star would genetically look something like:
Z^cZ^c ff (cock)
Z^cW ff (hen)

[stavros01]

Ok

And if i cross a cinnamon split to fawn male with a fawn hen, will i get yellow chicks??


Gustavo

[Crystal]

If you cross Z^cZ^c /f (cinnamon split fawn cock) to ZW ff (fawn, non-cinnamon) hen you would get:

Z^cW /f - cinnamon hens split fawn
Z^cW ff - yellow-bodied hens

Z^cZ /f - normal split for fawn & split for cinnamon cocks
Z^cZ ff - fawn cocks split for cinnamon

[stavros01]

Thank you, Crystal
But i think i made a mistake
I think my birds are fawn split to cinnamon X cinnamon
My doubt here is that i am not shore if fawn and cinnamon correspond to the same names/mutations in Portugal.

fawn = pastel or isabel??
and
cinnamon = brown???


Regards
Gustavo

[morne]

If you cross Z^cZ^c /f (cinnamon split fawn cock) to ZW ff (fawn, non-cinnamon) hen you would get:

Z^cW /f - cinnamon hens split fawn
Z^cW ff - yellow-bodied hens

Z^cZ /f - normal split for fawn & split for cinnamon cocks
Z^cZ ff - fawn cocks split for cinnamon

Hi everyone,

If I breed a Normal split cinnamon split fawn cock star finch with a Cinnamon split fawn hen star finch what colour babies can we expect to get? Will we get any Yellow babies?

Your help will be forever appreciated!

Kind regards,
Morne.

[hanabi]

morne

If I breed a Normal split cinnamon split fawn cock star finch with a Cinnamon split fawn hen star finch what colour babies can we expect to get? Will we get any Yellow babies?

Let me give this unanswered post a try. That is a complicated combination indeed, so the results are various. Fawn is autosomal recessive and cinnamon is sex-linked. Given: N=normal, F=fawn, C=cinnamon, *on average* (over time) you should see the following mutations and their respective percentages (hoping my calcs are correct):

Yellow body cocks @ 6.25%
C/F (cinnamon split fawn) cocks @ 12.5%
Cinnamon cocks @ 6.25%

F/C cocks @ 6.25%
N/F/C cocks @ 12.5%
N/C cocks @ 6.25%

Yellow body hens @ 6.25%
C/F hens @ 12.5%
Cinnamon hens @ 6.25%

Fawn hens @ 6.25%
N/F hens @ 12.5%
Fawn hens @ 6.25%

So yes you can obtain yellow bodied hens and cocks, but on average only 1 in 8 offspring will be yellow bodied.

[morne]

morne

If I breed a Normal split cinnamon split fawn cock star finch with a Cinnamon split fawn hen star finch what colour babies can we expect to get? Will we get any Yellow babies?

Let me give this unanswered post a try. That is a complicated combination indeed, so the results are various. Fawn is autosomal recessive and cinnamon is sex-linked. Given: N=normal, F=fawn, C=cinnamon, *on average* (over time) you should see the following mutations and their respective percentages (hoping my calcs are correct):

Yellow body cocks @ 6.25%
C/F (cinnamon split fawn) cocks @ 12.5%
Cinnamon cocks @ 6.25%

F/C cocks @ 6.25%
N/F/C cocks @ 12.5%
N/C cocks @ 6.25%

Yellow body hens @ 6.25%
C/F hens @ 12.5%
Cinnamon hens @ 6.25%

Fawn hens @ 6.25%
N/F hens @ 12.5%
Fawn hens @ 6.25%

So yes you can obtain yellow bodied hens and cocks, but on average only 1 in 8 offspring will be yellow bodied.

Thank you so much for your reply Ross! The help is much appreciated!

King regards,
Morne.

[Shannylee]

hanabi, wow! Great info!