It is very simple. They cannot produce a gene that they do not carry. Same thing with inbreeding or close linebreeding. It will not "grow" or cause a genetic problem that is not already there! Carolyn marhaven@xxxxxxxxxxxxxx www.Marhaven.com ----- Original Message ----- From: Paula M. Cooke To: showgsd-l@xxxxxxxxxxxxx Sent: Tuesday, January 17, 2012 10:22 PM Subject: [ SHOWGSD-L ] Was: Re: The AGONY of DM, now Basic Genetics & OFA An OFA clear animal can NOT produce OFA At Risk (homozygous) progeny. An OFA homozygous (At Risk) animal can NOT have an OFA clear parent. It is mathematically impossible! Period. Read any published work of Gregor Mendel. His laws form the theoretical basis of our understanding of the genetics of inheritance. It isn't rocket science!! And, OFA does NOT publish ANY abnormal results unless the animal's owner signs the specific release to do so. For example, on the hip submission form, it says, "Authorization to Release Abnormal Results I hereby authorize the OFA to release the results of its radiographic evaluation of the animal described on this application to the public if the results are abnormal_______________ (initials of registered owner)." Paula, 266 days and counting Home of BIS, BISS, Multi-Group Winning, 2 Time AKC JAM/AOE, Intern'l & Am CH, Silver Grand Champion Asgard Harley Davidson, HT, PT, CGC, TC, HIC, OFA CHIC #64047 (Hips, Elbows, Cardiac, & Thyroid),.1st male GSD Grand Champion. 2010 #1 GSD in California, Lifetime #1 GSD in Michigan, 2010 #1 GSD male in USA (AKC GCH Stats), 2011 Westminster Kennel Club Dog Show Invitee. 2010-2011-Lifetime AKC Eukanuba invitee. 2 Time Cruft's Invitee. ---------- Original Message ---------- Date: Tue, 17 Jan 2012 20:45:06 -0800 (PST) From: MORGAN LEWIS <shadowland22000@xxxxxxxxx> Subject: Re: The AGONY of DM If Gehren's parents were both� carriers - genetically you would have a ratio of 1 clear, 2 carriers and one at risk, so it would be possible,� Gehren's sir could be "AT RISK, thus all puppies would be carriers if Dam was clear.!! Morgan Lewis, RPh. Member GSDCA President Last Hope of� Georgia 501c3 "So Much to Do, So Little Time" ============================================================================ POST is Copyrighted 2011. 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 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. 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/ ============================================================================