Wow! That is quite an explanation you got, from an "expert," I would presume!! :-) Please read it yourself, from the OFA, themselves. Go to: http://www.offa.org/stats_dna.html?test=DM for the OFA stats on our breed. Scroll down the page until you reach German Shepherd Dogs. Then, go to: http://www.offa.org/stats_dna.html?test=DM to read the definitions of results. Paula Home of BIS, BISS, Multi-Group Winning, GSDCA Dual Title Award Recipient, AKC JAM/AOE, International & American Champion, Grand Champion Asgard Harley Davidson v Plamark, HT, PT, CGC, TC, HIC, OFA CHIC #64047 (Hips, Elbows, Cardiac, & Thyroid), DNA tested clear of the long-coat factor, 2010 #1 GSD in California, 2010 #1 Male GSD in the Country, 2010 #3 GSD in the Country, (AKC Stats), 1st male German Shepherd Dog Grand Champion, 2011 Westminster Kennel Club Dog Show Invitee. ---------- Original Message ---------- Subject: DM marker From: Julie Degen <ejdegen@xxxxxxx> Date: Tue, 1 Mar 2011 12:52:22 -0500 The way that it was explained to me is that the percentages have to do with affected dogs. So, what it means is that if you have a GSD confirmed with DM, there is only 40% chance that it has the DM gene. Which also means that 60% of DM dogs do NOT have the DM gene. Additionally, dogs that do have the gene may not ever be affected by DM. So, you test your dog and he is positive for having the gene. He may or may not get DM. You test your dog and he is negative for the gene, he may or may not get DM. Not very reliable or useful in my opinion.... Julie Degen www.caissonkennels.com Sent from my iPhone ____________________________________________________________ Dermatologists Hate Her Smart Mom Uses $8 Trick to Erase Wrinkles and Look Younger Instantly http://thirdpartyoffers.netzero.net/TGL3241/4d6d3d77596b653281dst06duc ============================================================================ 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/ ============================================================================