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Go Back   Talk Budgies Forums > Budgie Talk > Budgie Breeding > Mutations and Genetics


Mutations and Genetics Learn about budgie genetics and the wide variety of mutations.

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  #1  
Old 08-12-2015, 06:54 AM
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Default tcb and ino

hi
i have somthing in mind
let me clear it
albino budgie is sex linked. and tcb also sex linked. if i have some pair can u plz tell me what ll b chicks.

tcb male & albino female..
i knw all female will b tcb and all male will b tcb split can all male will b tcb and inos split both or one of them?

if i pair thier chicks male from earlier pairing to other female tcb or albino what will b rerslt..

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Old 08-12-2015, 01:55 PM
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Even though Ino is dominant to everything, even TCB, you won't have any visual albino chicks because the Ino gene is on the mother's side and therefore only is passed on to the males, who would be split for it.

If you have a TCB cock paired with an albino hen, all the males will be split for both Ino and TCB, and all the females will be TCB.

If you breed one of the female TCB chicks from this clutch with a TCB cock, you will get 100% TCB chicks. If you pair a female TCB chick with an Ino cock, you will get all visual Ino females and all male chicks will be split for both Ino and TCB.

If you breed a male from this clutch with an Ino hen, you will get half of all males split for both Ino and TCB, and the other half of all male chicks will be visual Ino. Half of all female chicks will be visual TCB, and the other half will be visual Ino. If you breed a male from this clutch with a TCB hen, half of all males will be split for both, the other half will be visual TCB. Half the females will be visual Ino and the other half will be visual TCB.

Does that make sense?
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  #3  
Old 08-12-2015, 03:38 PM
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Texas clearbody and ino are actually a bit more tricky with different expectations than you would expect with other sex linked mutations that are not linked

With the pairing you have mentioned, a TCB cock and an ino hen, you will actually expect to have all clearbody chicks in both male and female. The males will also be split for ino in addition

This outcome sounds a bit off to begin with, but as TCB is actually dominant to ino, the pairing you have is wonderful if you are looking to have more TCB's, and I have used this pairing many times as well

If you pair a TCB hen to a ino cock you will expect to have all TCB cocks split for ino, and all of the hens from the pairing will be inos.

Hope this helps! We would love to see the chicks if/when they come along from your pair as they will no doubt be gorgeous!
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Old 08-12-2015, 03:49 PM
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Thanks to Lindsey for clearing that up

It's so interesting that TCB is dominant to Ino!
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Old 08-12-2015, 04:15 PM
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Originally Posted by StarlingWings View Post
Thanks to Lindsey for clearing that up

It's so interesting that TCB is dominant to Ino!
Aww no problem at all! I was very surprised to learn the same thing myself at first. Gotta love genetics and the constant suprises they give us, right?
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Old 08-12-2015, 08:29 PM
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Just to add to the interestingness.... TCB is an allele of Ino. That means it is a mutation of the same gene and is an altered for of the ino gene.

So, you can't have a visible Ino cocks split for TCB. To be visible they must have 2 Ino genes, as Ino is recessive (and sex-linked), so you can't have a third gene at that locus (position) to allow it to be split to TCB.

For interest, if you like such things:

allele = an altered form of a gene, so all mutations of a specific gene are alleles of the wild type of that gene. Ino and TCB are alleles of the original wild type ino gene (non-ino or normal). Clearwing, Greywing and Dilute are all alleles of the wild type gene for full strength markings and body colour.

Locus = the position of the gene on the chromosome, the place it is always found. So if you mapped the chromosome you could say that the Ino genes locus is ...... and it would always be found there.
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Old 08-12-2015, 09:50 PM
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Toni: That's intriguing.

I had no idea TCB was an allele variation of Ino, but it makes sense since both traits are sex-linked and deal with albinism, although with varying degrees of penetration.
Now that I think of it, though, it should have been obvious as the general categories of alleles (melanism, leucism, albinism, etc.) all have different variations on the same DNA pattern.

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Old 08-16-2015, 08:11 AM
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sorry
fr late reply
hmm so its means if male is tcb and fem is albino
all female will be tcb
and all male will b split of albino and tcb
if i again pair this kind of split
like..
male split both tcb and ino pair with ino hen
half chiks are inos?
or 2nd if i pair split male of both with tcb hen. thn hald chiks will b tch some female ino
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Old 08-16-2015, 08:11 AM
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one of my friedn already have tcb with fallow mutation...
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Old 08-17-2015, 05:47 AM
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Originally Posted by shani View Post
hmm so its means if male is tcb and fem is albino
all female will be tcb
and all male will b split of albino and tcb
Nope . If you pair a tcb male with an ino female you should get tcb females and tcb males split for ino. Take a look as Lindsey's first post.
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