LOL, Susan Cochran was taking a calculus exam today and her brain is fried!
It is more common for a wholecolor to NOT carry for parti than it is for a wholecolor to carry for parti. However, a wholecolor that carries for parti is not what I would call rare. It is sort of like saying that Rubies are rare. There are actually a lot of Rubies, but not when you consider them percentagewise to the other 4 colors. There are actually a lot of wholecolors that carry for parti, but not when you compare them to the ones that don't. I'd say that as many as 20% of wholecolors carry for parti-- maybe more as there has been a lot of wholecolor x parti breeding in the last few years. However, if you purchase a wholecolor and the 3 generation pedigree shows all wholecolor, it is unlikely (but possible) that the dog would carry for parti. The further back in the pedigree that you have to go before you find a parti ancestor, the less likely the dog is to carry for parti. For example, a parti parent makes it a certainty that the dog carries a parti gene. A parti grandparent gives maybe a 25% chance of the dog carrying for parti. The next generation back would give a 12.5%. We are talking about the placement of one parti in the whole pedigree. If there is more than one parti ancestor then the odds change. (I am thinking that the risk is halved every generation back to the parti or the known recessive, but as I mentioned earlier, the brain is fried today so I could be off.) All the best, Susan Cochran ----- Original Message ----- From: "Jackie Farrell" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, October 07, 2002 3:55 PM Subject: Re: [CKCS-L] Color genetics > On Mon, 7 Oct 2002 14:44:54 -0500, Barbara Cooke <[EMAIL PROTECTED]> wrote: > > >Ok, last question, I promise. So a black and tan that does not carry for > broken > >color is a rare thing and will only produce black and tans no matter what > it is > >bred with? (And the only way to tell is by seeing several litters with no > red > >or parti color.) ??? > > > Boy, am I feeling talkative today or what? It must be the local > thunderstorms that are keeping me at the keyboard! <VBG> > > Barb, > > I don't know how rare or not rare it is for a wholecolor (Bl/Tan or Ruby) > to carry the for broken color as it all depends on the dogs in the > pedigree, but if the Black and Tan carries the red but not broken color it > can still produce a Ruby if bred to another Bl/Tan that also carries the > red. > > Where's Susan Cochran when we need her? <VBG> > > Take care, Jackie > > ========================================================= > "Magic Commands": > to stop receiving mail for awhile, click here and send the email: > mailto:[EMAIL PROTECTED]?body=SET%20CKCS-L%20NOMAIL > to start it up gain click here: > mailto:[EMAIL PROTECTED]?body=SET%20CKCS-L%20MAIL > > E-mail [EMAIL PROTECTED] for assistance. > Search the Archives... http://apple.ease.lsoft.com/archives/ckcs-l.html > > All e-mail sent through CKCS-L is Copyright 2002 by its original author. ========================================================= "Magic Commands": to stop receiving mail for awhile, click here and send the email: mailto:[EMAIL PROTECTED]?body=SET%20CKCS-L%20NOMAIL to start it up gain click here: mailto:[EMAIL PROTECTED]?body=SET%20CKCS-L%20MAIL E-mail [EMAIL PROTECTED] for assistance. Search the Archives... http://apple.ease.lsoft.com/archives/ckcs-l.html All e-mail sent through CKCS-L is Copyright 2002 by its original author.
