trii-factored sable merle?

Y

yosualiu

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I have a sable merle sheltie, Tayra. Here's Tayra picture.
http://fav.me/d4lh17o
I wonder if she has tri-factored color or not. Her dam is tri-factored sable, and her sire is tri-factored sable merle.
How can I know whether she is tri-factored or not?
 
so, in short terms, there's no way to know it? When I adopt Tayra, the breeder said that she is tri-factored. I wonder how he knew that.
 
yosualiu said:
so, in short terms, there's no way to know it? When I adopt Tayra, the breeder said that she is tri-factored. I wonder how he knew that.
Click to expand...

He wouldn't. Not with her coloring. S=sable, T=Tri factoring M=merle

Mom geneticly is ST mm Dad is ST Mm

Throw out the merle because you know your pup is a merle -Mm
So you get 25% SS(pure for Sable) 50% ST(Tri-factored Sable) and 25% TT(Tri factored Tri- obvious not this)

So your odds are that your girl is Tri factored by 2 to 1 but she could be pure for sable. Only way to know is if she produces a tri puppy when bred to a factored sable dog. If she never has puppies you will never know. If she never has a Tri puppy even when bred, she still might be. Heck we have a Blue Merle girl here that has had 2 litters and only had Tri puppies and we know she is a merle(obvious). We have the same problem with Bi factoring in AOACs.
 
Yes, Cran is a tri-factored sable Merle as
his sire is a tri-factored sable and his dam a blue Merle. The reason the litter turned out so colorful. :) All the colors of the rainbow except bi's
 
Justicemom said:
He wouldn't. Not with her coloring. S=sable, T=Tri factoring M=merle

Mom geneticly is ST mm Dad is ST Mm

Throw out the merle because you know your pup is a merle -Mm
So you get 25% SS(pure for Sable) 50% ST(Tri-factored Sable) and 25% TT(Tri factored Tri- obvious not this)

So your odds are that your girl is Tri factored by 2 to 1 but she could be pure for sable. Only way to know is if she produces a tri puppy when bred to a factored sable dog. If she never has puppies you will never know. If she never has a Tri puppy even when bred, she still might be. Heck we have a Blue Merle girl here that has had 2 litters and only had Tri puppies and we know she is a merle(obvious). We have the same problem with Bi factoring in AOACs.
Click to expand...
Ok have to figure something out here. I'm still a "newbie" so to speak in breeding, so I may not be getting this right... but on what I've studied... sable is a dominant gene and in my thinking, sable to sable no matter the factoring would produce sables. Now if you bred a sable Merle to a tri you could figure out the Merle gene so to speak if she produces a blue merle
 
SheltieLuver said:
Ok have to figure something out here. I'm still a "newbie" so to speak in breeding, so I may not be getting this right... but on what I've studied... sable is a dominant gene and in my thinking, sable to sable no matter the factoring would produce sables. Now if you bred a sable Merle to a tri you could figure out the Merle gene so to speak if she produces a blue merle
Click to expand...

Nope if you 2 factored sables be it bi or tri, both parents carry the black gene but it is hidden by the dominant sable gene.

So 2 factored dogs will produced a black dog 25% of the time. If both dogs are bi factored, the black dog will by Bi but if one of the pair is Tri factored then the black dog will be Tri regardless of the factoring on the other dog.

If one of the sables is pure for sable and bred to a factored sable, you will get sables everytime but 50% will be factored and 50% pure for sable.

It gets really tricky if you bred a sable merle to a tri, you could possible produce every color depending on what genes the sable merle and tri are carrying.

This is a fun thing to play around with to understand the colors.
http://www.athro.com/evo/gen/sheltiecalc.html
 
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