I thought I had a pretty reasonable understanding of basic colour genetics in the mini schnauzer, but my latest litter has thrown a spanner in the works!
Mum and dad are both black dogs. That means they are each carrying at least 1 black gene. Now I have a litter with 5 black, 1 pepper and salt, and 1 black and silver puppy. Because black and silver is recessive to both pepper and salt, and black, a black and silver dog must have 2 black and silver genes, right? By the laws of genetics, it must have got one from mum and one from dad. So that means mum and dad are each carrying one black gene and one black and silver gene. So where did the pepper and salt puppy come from ???
There is absolutely no chance that any other dog could have been involved in this mating... we live on a farm! And our dogs are always near us. I just can't work this out... Does anyone have any ideas or maybe I have missed something obvious here????