If I read this a few more times I may get it. Where do the white spots come from? I am talking the white that covers most of the chest and comes up the neck to the chin. Thanks Terry On Tue, Jan 20, 2015 at 10:02 PM, Jen Proud <proudk911@xxxxxxxxx> wrote: > I must respectfully disagree. > Pattern (in order of dominance: sable, tan point, self color) is on the > agouti locus > Expression (or some still call Extension) is whether the dog will express > what is its agouti locus, or not- as is the case in a white > GSD; the self-colored mask is the dominant gene at this locus, giving the > large majority of GSDs who can express phaeomelanin at their agouti locus a > black face mask > There are commercially available tests for both of the above traits. Both > combined cost less than $150 US per dog. > eXtension (another unknown locus- hence why I like the X) determines the > amount of self-coloring present on the mantle, and is what causes a saddle > to range from very small and even "browned out" to a bicolor with minimal > markings... Or can turn a genetic self-color into what we could call a > bicolor because they actually are "browned out" which (somehow) allows a > self color dog to show its phaeomelanic pigment!!!! > HOWEVER- it is an yet unknown location where the modifiers for the > Intensity of that phaeomelanin that determine how dark it is. > > If the dog has the correct Intensity modifiers to produce red > phaeomelanin, they will be black (or blue or liver depending on genes at > unrelated loci) and red, regardless of what pattern they are expressing at > their agouti locus with the exception of the most recessive a-a self color > (and therefore no phaeomelanin produced). > A red sable would be a red saddle would be a red bi-color regardless > unless you changed his Intensity genetics to make him tan, cream, or > silver. > > :) > > Jen P & her Pack who knows color/pattern is more just window-dressings in > a breeding and that a good dog is a good dog is a good dog regardless of > pattern (agouti locus expression) but finds color genetics fascinating and > likes things to be functional and pretty at the same time. How demanding of > me. > > > On Tuesday, January 20, 2015, Penny Kroh <farmdogforever@xxxxxxxxx> wrote: > >> It would pop up more often Flowerboy, if more people would breed to >> solid blacks or bi-colors. <G> >> >> Penny in NC >> The Farm Dog Forever >> >> On Tue, Jan 20, 2015 at 1:53 PM, <edwinx@xxxxxxxxxxx> wrote: >> > This is NOT a German VS American question so please don't misunderstand >> the >> > question! It seems that the majority of German working style GSDs are >> > black/red...and the majority of American/Canadian conformation style >> GSDs >> > are NOT black/red. Yes I know all strong colors, except the >> disqualifying >> > ones, are permissible... I like black and red! My half German bitch is >> black >> > red...just wondering why it seems not to pop up very often in most of >> our >> > "show" dogs Ed >> > >> > Sent from Xfinity Connect Mobile App >> >> ============================================================================ >> POST is Copyrighted 2015. All material remains the property of the >> original author and of GSD Communication, Inc. NO REPRODUCTIONS or FORWARDS >> of any kind are permitted without prior permission of both the original >> author AND of the Showgsd-l Management. ALL RIGHTS RESERVED. >> >> Each Author is responsible for the content of his/her post. This group >> and its administrators are not responsible for the comments or opinions >> expressed in any post. POSTS CANNOT BE USED IN A COURT OF LAW. >> >> ALL PERSONS ARE ON NOTICE THAT THE FORWARDING, REPRODUCTION OR USE IN ANY >> MANNER OF ANY MATERIAL WHICH APPEARS ON SHOWGSD-L WITHOUT THE EXPRESS >> PERMISSION OF ALL PARTIES TO THE POST AND THE LIST MANAGEMENT IS EXPRESSLY >> FORBIDDEN, AND IS A VIOLATION OF LAW. VIOLATORS OF THIS PROHIBITION WILL BE >> PROSECUTED. >> >> For assistance, please contact the List Management at admin@xxxxxxxxxxx >> >> VISIT OUR WEBSITE - http://showgsd.org SUBSCRIPTION: >> http://showgsd.org/mail.html >> NATIONAL BLOG - http://gsdnational.blogspot.com/ >> >> ============================================================================ >> > > > -- > JayDee's Proud-Haus Shepherds/Proud K911 Canine Consulting > Committed to the Total Dog you can be Proud of!!! > www.jaydeesphs.com > > Support the next generation's stewards in the sport of dogs... Donate to > the German Shepherd Dog Youth Recognition Fund! > www.dogshowjuniors.com >