BCCFW and CFW

[love4finches]

Hi all. Back with questions.....again.

I can't seem to get a handle on this variety yet this is the one I love the most.

I have a male CFW paired with a BCCFW female. Will all the chicks be CFW/BC or will I get greys as well split to BC and CFW?

[ranchnanny]

I have the opposite of your pair a CFW Hen and a BC normal maleand have what looks like 3 with hatchlings that should fledge any day now.... What does it take to get more BC Zebs?
What where you hoping for?

[cindy]

the calculator will not let me add in the Continental part but cfw and ccfw are sex linked, hens look the part but give split to males

this is done with a CFW male and a BCCFW
50% Chestnut flanked white /Black cheeked Males
50% Chestnut flanked white /Black cheeked Females


this is done with a CFW female and a BC male

50% Normal/Black cheeked Chestnut flanked white Males
50% Normal/Black cheeked Females

[lstyles]

Its not too complicated, you just have to look at each mutation by itself. If both male and female are CFW then all their chicks will be CFW...cant be anything else. As for the BC, you are breeding a BC with another bird which is presumably negative for any BC. If so then all chicks will be /BC. Therefore all chicks will be CFW/BC whether male or female. If, by chance the bird that isnt BC happens to be an unknown carrier then 1/2 of the birds will be BC CFW and the other half will be CFW /BC with no relationship to their sex.
Hope that clear.
Lori

[cindy]

Lori is right...take the calculator and lug in different scenerios to get your outcomes....just remeber cfw and ccfw are sex linked and the hen basically translates as a gray but she can give splits to CFW or CCFW.

http://zebrafinch.info/colours/genex.asp#

[Jeff McKee]

BC to appear on a bird, must be received from both parents. The bird must be double factor.

Single factor birds do not display BC. You know they are split to black cheek though, because the gene they got from one parent is obviously BC. Sometimes a split bird will be a bit smudgy. I have one of those right now. She is clearly smudgy.

In regard to NG/CFW (body colouring)

NG is dominant to CFW.

Males have two genes - one from Mom & one from Dad.
Females have one gene - from Dad

So, Mom displays her gene. Dad has two genes. One of the genes is unseen. If it is different than the gene that he displays, the young could be of that gene.

1) Dominant Silver

2) NG
2) Fawn
(NG or Fawn results are random)

All to these genes are hidden behind the genes listed above. They don't show when combined with
3) CFW (two versions)
3) White
3) Isabel
3) Florida Fancy

I suspect that when the genes with a 3) value are combined, on a bird, NG shows.

Genes for Cheek, Pied, Yellow beak, Crested, Penguin, breast, Eumo - aren't body colour genes. So they're in a different spot on the genetic coding.

Okay genetic experts, tune me in! I suspect I've got something mildly cross fired!

[love4finches]

Thank you all for your explanations. I'm actually starting to get it. You know if you all wrote a book "Finch genetics for dummies" I would be your first customer. Maybe one day someone really will do this. It would be great!