Boys sounds as if to me that ol ralph has done his homework, I will also agree with most of his opinions .Hey ralph if i line bred heavily for say 9 generations why are myRalph Pearson wrote:blunder that is not true. I understand that you get big and small but you also get average when it comes to size or treeing instinct. You will get all of the above. Also I am not talking about the just the first litter on the size thing. Over time and many generations. I have seen it too many times in horses dogs and other species such as catlle etc. If you are talking about Mendels experiment, he used a species of plant that had height determined by simple recessive or dominat gene and yes, they are inherited either tall or short. In mammals height is more determined by several genes that are not inherited in a simple Mendel fashion. Many traits are caused by the number of genes present for that trait. Shyness would be one of them. A dog is not either shy or not shy but is variouys degrees of shyness depending on how many genes he has for the trait. Treeing is the same way and so is height. Dr Leon Whitney showed that long legs were recessive to short legs which may be true but there are other factors involved. I have watched for this over the years and it never held true in litters except in a general way. Yes if you breed a weenie dog to a lab all the pups will have mostly short legs in the FIRST cross. All would still be carrying the recessive for longer legs and later generations would show the trait but not to the extreme the lab shows it. Most would be a litte shorter over time. It is not inherited in simple menedel fashion such as peas or eye color in humans etc. The amount of treeing instinct is caused by more than one or 2 genes and depends on how many genes the dog got for the trait. Also other traits or genes are involved such as frustration threshold and some others. Hang in there!
pups losing there size? Also why are heavily linebred dogs getting sick so easy ?