I don't know about shelties, but I've seen both ES and collies whose coat didn't indicate they were tri-factored with heavy black shading. I haven't seen tri-factored blondies as often in the collies, but I have a photo on my computer of a sable merle collie bitch who's even lighter than Ginny and has produced tris and blues.
That aside, yep, the genetics are the same.
Merry
> Date: Mon, 14 Apr 2008 11:37:56 -0700
> From: [log in to unmask]
> Subject: Re: [FARMCOLLIE] Pups in WA state
> To: [log in to unmask]
>
> Okay, this is, I think, more of a question about how similar breeding works between shelties
> and ES's. Just wanting to learn a bit. <ggg>
>
> Now, in shelties, our sable can be tri factored. And, Ginny, with her mother being a tri we
> would really assume that she was tri factored from the time she was born on. Now, the sire,
> with both parents being sables, could be a tri factored sable himself..........but you don't
> find out until breeding him. Unless you knew both parents were tri factored. Obviously at
> least one of his parents is tri factored and he inherited that gene.
>
> And, in shelties, there are hints in the coat color as well that does help to give clues
> towards judging if a dog/bitch is tri factored. Is that true in ES's also??
>
> Inquiring minds.......
>
> Sandra
> MythicWinds shelties
>
>
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