> Now, there's an interesting genetic question. I always learned that > when it comes to genetics, A + B always = A or B, not a mix of the two > (ie if you breed a horse with a big head with one with a small head, > you will get either a big or a small head, not a medium head). Yet in > my sole Icelandic (short tail) cross Welsh (long tail), the lamb has a > medium length tail. Curious....
I think you can say that " A + B always = A or B" if it is a simple dominant/recessive controlled trait. You can have incomplete dominance, or incomplete penetrance, or polygenic traits (continuous variation traits). Breeding would definitely be easier if all traits were simple dominate/recessive controlled! Cheryl Sand Creek Icelandics Icelandic Horses and Icelandic Sheepdogs email: [EMAIL PROTECTED] website: www.toltallyice.com
