Once a particular gene is isolated, of course, one can certainly base a breeding program on that one gene... Peggy ----------------------
Yes, if the gene is a recessive one since recessives must be homozygous for a recessive trait to exhibit itself. That's how new breeds are started. Well, usually--- there are a few breeds that are based on the heterozygote (Blue Andalusian chickens for example and the hairless dog breeds) and they are much more difficult to maintain since the desired phenotype will not breed true. All the best, Susan Cochran ----- Original Message ----- From: "Peggy Mickelson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, December 11, 2001 10:27 PM Subject: [CKCS-L] phenotype v. genotype > Hmmm - coming late to the conversation, and probably missing a few of the posts, but I do wonder how one can breed by genotype, since it seems to > be pretty much impossible to know all the genes in a given dog's makeup. On the other hand, every breed in the world, warts and all, was developed > basically by breeding phenotype...and in some cases, with a care to working ability. > As for breeding scientifically (that is, trying to do it genotypically) I've yet to hear of a successful breeder. E.g., what has Dr. Padgett > bred...??? Of course, it is probably a little easier to say you're breeding genotypically when the breed in question has very, very little > variation in phenotype. But unless someone is very busy keeping track of every little gene, generation after generation, I don't believe it is > possible. Once a particular gene is isolated, of course, one can certainly base a breeding program on that one gene... > Peggy > > ========================================================= > "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 1999 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 1999 by its original author.
