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Breeding two recessive coat types.......?

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shellydawn

Sun Jan 11 2009, 09:27PM

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So how do you find out what genotype your dog has?

SHELLY
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Sun Jan 11 2009, 09:32PM

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If you know what the dogs littermates were and its parents colours you can guess sometimes.
Otherwise its only known if you breed to a known dogs genotype and get or dont get colour.

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ccal

Sun Jan 11 2009, 09:35PM

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crazybob, who are the parents of your litter?

Shoestring Acres

Sun Jan 11 2009, 09:39PM

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Shelly,

Figuring it out is often based upon knowing (or speculating about) the genotype of parents and grandparents. It's helpful if there's a tawny in there somewhere, as that's a single genotype and let's you narrow down some possibilities for their get. It also helps knowing what parents and grandparents have produced regarding color. For example, knowing a blk dog has produced color can tell you his genotype.

There's a decent chance that my Ermes is BbDb, but we'll just have to wait and see.

Dan

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shellydawn

Sun Jan 11 2009, 09:47PM

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Maia, Tes and Dora definitely have color in their backgrounds, and I am told that Romeo and Bella do also. So is it possible that they can throw color even though the colored dogs are 2 or 3 generations back?

Maia's mother is blue and was bred to a black for her last breeding and threw all colors. Can anyone tell me what Maia's chances would be to do the same?

[ Edited Sun Jan 11 2009, 09:51PM ]

SHELLY
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Sun Jan 11 2009, 09:52PM

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Thats the genotype of my female venere BbDd.

I know that because her mother was recessive mahogany bbDd and her father had to be Bbdd because there was all 4 colours in the litter she was born from and that her and all her littermates would be the recessive of their colours because its only possible to make all 4 colours (which also happen to be recessive) from a mahogany X grey if they both recessive.

Though if i breed her to my male who is recessive grey i can get all 4 colours but 12.5% will be dominant grey and 12.5% dominant black. 12.5% recessive mahogany and 12.5% tawny with another 25% each of recessive blacks and greys

so if she had 8 pups the statistical approach would be that 1 is dominant black 2 recessive
1 is dominant grey and 2 recessive
1 mhaogany and 1 tawny

If you breed a grey to a tawny and get all grey pups they however will all carry the gene for colour.

tawny to recessive grey will produce 50% tawny and 50% recessive grey

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Sun Jan 11 2009, 09:53PM

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what colour was maias father ?

shellydawn

Sun Jan 11 2009, 10:03PM

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Grey

SHELLY
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Sun Jan 11 2009, 10:11PM

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And all her littermates were grey?

if so then its likely she has a 50% chance that she can produce blondes and greys if mated to a blonde male or 25% dominant grey 50% recessive grey and 25% tawny if mated to a recessive grey.

your previous post though you said that romeo may alsoi carry but the fact her litter was all grey probably means she is dominant grey. But I cannot be certain.

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Mon Jan 12 2009, 10:35AM

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Garry I think that a public list may not be the answer....But I am certain that many people will be adding info to their websites about dogs carrying colour. Now that so many are interested.

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