Oh, and numbers to remember: 50%, 25%, 12.5%, 6.25%. Usually thats as far down as you'll really come across. Also, remember that if you are going to get 66% possible hets then you multiply whichever number by 3, getting 75%, 37.5%, and 18.75%, that will eliminate your 2 hets and 1 normal. That's for recessive genes when breeding 2 100% hets together, mind you.