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Agouti Zygousity

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Threnody
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Agouti Zygousity
So I've been thinking. Since there seems to be a correlation with brown zygousity and its appearance, might this be true for the allele for common bay? :-? Just wondering what you guys think.
RiddleMeThis
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IMO no.

IMO no.

IMAGE(http://alterna-tickers.com/tickers/generated_tickers/i/ikmc9z103.png)

greenlich
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What is the link between

What is the link between brown zygosity and its appearance?

Threnody
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Heterozygous browns that have

Heterozygous browns that have been tested often appear seal brown, while some homozygous browns appear more like dark bays.

Third Peppermint
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Wait, it's not the other way

Wait, it's not the other way around?

Threnody
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It makes sense since 2 doses

It makes sense since 2 doses of brown would be more restrictive on black.

http://i872.photobucket.com/albums/ab283...

Now we just need to figure out the deal with wild bay. Alternate expression of common bay? Different allele?

greenlich
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Thanks for that. We have a

Thanks for that. We have a filly that is brown, her sire was brown and her dam is black. So that makes sense as she has lighter points (like a seal brown). Is bay dominant to brown? So a heterozygous brown would have to be Ata?

Threnody
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Yup exactly ^_^If the sire

Yup exactly ^_^
If the sire was bred to a Bay the foal could be Bay since it would inherit it from the dam. Since Brown is the most recessive of the agouti alleles Brown x Brown matings can only pass on the 'At' or 'a' alleles on the agouti locus.

Dogrose
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Threnody wrote:Yup exactly

Yup exactly ^_^
Since Brown is the most recessive of the agouti alleles

Isn't self (i.e. non-agouti) the most recessive allele on agouti?

[color=#804000][i]I bought me a horse twas called a grey mare
Grey mane and grey tail and green stripe on her back
Grey mane and grey tail and green stripe on her back
Weren't a hair upon her that was not coal black[/i][/color]

Monsterpony
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You are correct Dogrose.

You are correct Dogrose.

.

Threnody
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Should have worded most

I should have worded most recessive of the functional agouti alleles. :P

pandemonium