Posted 7/16/2010 17:59 (#1276028 - in reply to #1276014) Subject: RE: To clear up the defects question...
SW KS, near Dodge City
The precision bull has to be used on both the maternal and paternal side. If you only have it on one side, you'll be fine b/c it's a recessive gene. GAR has thoroughly addressed this problem, and if you go to their website they'll explain it in depth.
I'm not a cattle guy, but that's what I've gathered.