I've stolen this quote from another thread. Apologies to the author.Hereditary disorders are actually one of the main reasons I prefer mutts: the less closely related the parents are, the better chance of avoiding some of these disorders! It’s simple genetics and it applies to everything from bacteria to humans. Colloquially it’s called hybrid vigor, but it applies to more than just corn. Of course, if the parents of your pup are tested (not for the disorders themselves, but for the alleles that cause them), you eliminate that chance altogether - for the genes that you tested for. Can you tell I'm a biologist?
I've also seen in other threads other people say that 'hyrbrid vigor' is a myth, that it had no validity (in the dogworld).
I haven't got a clue about genetics. Can anyone describe in layman terms what the real deal is ?