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-   -   "Hereditary" chimeric? (http://www.horseforum.com/horse-colors-genetics/hereditary-chimeric-71872/)

Piaffe 11-29-2010 02:11 PM

"Hereditary" chimeric?
 
I have been wondering....about chimeric again:wink:Lol

Soooo.....in humans if you are a twin or your mother had a set of twins, or you have many twins in your family,etc. You are more likely to have twins yourself (some,but not all types of twins are hereditary)

Then....in chimeric horses the same thing happens....twins are believed to have fused. So in these brindles stallions producing "brindle" offspring couldnt they really just be chimeric because even though chimeric isnt "heridetary" the chance of having more sets of twins IS and thus have a much higher chance of producing twins. And a higher chance of them fusing to produce chimeric?

So it kinda makes the chimeric somewhat hereditary anyways?

I hope this makes sense....lol...
opinions? Thoughts?

Piaffe 11-29-2010 04:46 PM

Lol....maybe too much coffee and too little sleep? Haha

Zeke 11-29-2010 04:57 PM

Your theory makes sense...but I have no clue! Would love to see some answers to this. Have you tried google at all?
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Piaffe 11-29-2010 05:04 PM

Lol...well i am glad it makes sense at least. I didnt turn up any answers with google.

Anyone? Anyone? Lol

CheyAut 11-29-2010 05:56 PM

Those brindles who pass on brindle are not chimeric.

Zeke 11-29-2010 05:58 PM

Quote:

Originally Posted by CheyAut (Post 833898)
Those brindles who pass on brindle are not chimeric.

So what are they then?
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Piaffe 11-29-2010 06:15 PM

Quote:

Originally Posted by CheyAut (Post 833898)
Those brindles who pass on brindle are not chimeric.


But chimeric is still kind of hereditary then? Even though the "color" is not...the actual occurance is? I think.....

Chiilaa 11-29-2010 06:40 PM

Piaffe - I have twins IRL so I know a bit about them, so bear with my lengthy rambling.

The ability to have FRATERNAL twins is genetic. It is passed to a female from her family. It is a genetic pre-disposition to release more than one egg in an ovulation cycle. It has nothing to do with the male half in a breeding situation - he can pass on the predisposition to his daughters, but can't make it happen in his mate. ALL chimeric horses that display two colours are fraternal twins.

Identical twins are random chance. There are lots of theories, but no one knows why the egg splits.

Hope this helps, feel free to ask because there is lots I know about twins lol.

Piaffe 11-29-2010 06:50 PM

Ahhh...i see. I didnt realize it was just the female that passed it on. Got it...thanks!

Chiilaa 11-29-2010 06:52 PM

The male can pass on the chance to have the gene to his daughters.


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