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Originally Posted by JeanieK  it's easir to breed for a recessive trait since breeding two recessive together will always breed true. For example if you breed two partis together you will only get partis. |
Point taken, and I agree with you about the partis. My understanding is that it's the piebald gene that expresses the white color.
I don't think that logic is true for all recessive traits, however. Not all traits are governed by a single pair of genes. For example, I have a boy and girl, both with long silky coats. I have bred them twice and, with the first litter, all the pups had gorgeous, long, silky coats. With the second breeding, I got 3 pups with the long coats and one with a slightly wiry coat. Since the long, straight coat is the result of recessive genes, one would think that both parents would breed true if there was only one pair of genes controlling these factors.