Genes for Coloration
Some things you may not know about the genes responsible for coloring a dog.
Hybrid Vigor
An explanation of how “hybrid vigor” works on the genetic level.
Negative Recessive Traits
Some of the traits that the “purebred/inbred” dogs suffer from and why.
For more information and research on the effects of inbreeding and crossbreeding see the University of Pennsylvania School of Veterinary Medicine website:
http://cal.vet.upenn.edu/index.php?page=veterinary-medical-genetics-information-site
Midgard Mastiffs 