Found some great pics on incisor shovelling and Carabelli's cusp here:http://images.google.ca/imgres.....en%26sa%3DN%26um%3D1
Scroll down the page until you get to Figure #4 - click on it and you'll get the "big picture"!!
I didn't have a chance to check my models, but from what I can remember (and feel with my tongue
), I have neither. I don't think that this will alter my genotype.