Interesting Topic--Evolution of Snake Fangs

I've been SUPER busy lately...hence the lack of posts. One of the things I'd like to do with this blog is talk about interesting topics related to science and, along those lines, here is something I read that was really cool. It is from the Pharyngula blog, written by prof. PZ myers on the evolution of snake fangs. It shows how fairly robust alterations in an organisms phenotype (whether or not the snakes have fangs in the front of the mouth, back or both) can result from fairly simply changes at the developmental and genetic level.

Link: http://scienceblogs.com/pharyngula/2008/07/evolving_snake_fangs.php#more

Hopefully I'll have a new post up soon.