These guys are often quite biology illiterate– especially when it comes to genetics.
And yet they breed dogs and love to lecture everyone on the merits of keeping lines pure, even if logic and common sense say otherwise!
Read this comment:
Judging from the appearance of that one puppy. I don’t think they are first generation border/bearded collie crosses. I’d be very surprised if that’s what they are. The shaggy beard of the bearded collie is dominant to the smooth muzzle of the border collie.
That said double merles actually do appear in purebred dogs, and in some breeds, like collies and Great Danes, they are intentionally produced to increase the number of merles in the litters they produce. The winner of the breed for the rough collie at this year’s Westminster Kennel Club dog show was sired by an eyeless double merle, who may also be deaf.
Double merles, also known as homozygous merles, often have problems with their eyes and ears. They are sometimes born without anything we’d recognize as eyes and without ear canals. Although it is possible for heterozygous (single) merles to have issues with their eyes and ears, they normally aren’t as severely affected as these double merles, which are sometimes called “lethal whites.”
I should also note that people have been breeding border collies to bearded collies for decades– often without any problems at all. David Brian Plummer often used beardie/border crosses to produce his lurchers, and it is well-known that most border collies have some bearded collie ancestry.
So once again simple facts and logic have totally destroyed this bromide from the anti-PDE Faceboo group, your source for paranoid conspiracy theories, crackpot science, and persecution complexes galore.
Now, to be fair, in Kennel Club (of the United Kingdom) refuses to register any puppies from merle to merle breedings, even if they are healthy or aren’t even merle.
But in the AKC, not only are pups from merle to merle breedings allowed to be registered, they are often quite celebrated.
And the mental gymnastics used to defend these breedings over here are every bit as bizarre as the ones used on the anti-PDE Facebook group.
If the KC allowed registrations of puppies from these unions and there were top dogs in the ring that came from these breedings, you can bet the exact same mental gymnastics would be used.
You can bet on it.