g(r)al(h)inhas com dentes

Não sou a única a precisar de ir ao dentista:

"Mutant Chickens Grow Teeth
By Jennifer Viegas, Discovery News

Feb. 22, 2006 — Chickens born with a mutated gene associated with tooth development were coaxed by researchers into growing functioning teeth, according to a paper published in this week's Current Biology.
Researchers previously caused teeth to grow in birds by combining mouse tooth-forming tissue with bird jaw tissue, but this time the scientists merely enhanced a genetic trait that exists naturally in the mutant birds.
The unusual feat represents the first evidence for tooth development in birds without grafts or tissue manipulation.
Lead author Matthew Harris told Discovery News that the early theropod dinosaur ancestors of birds possessed impressive choppers. "

In: http://animal.discovery.com/news/briefs/20060220/chicken.html