Scientists discover why teeth form in a single row
Thursday, February 26, 2009 - 21:56
in Paleontology & Archaeology
A system of opposing genetic forces determines why mammals develop a single row of teeth, while sharks sport several, according to a study published today in the journal Science. When completely understood, the genetic program described in the study may help guide efforts to re-grow missing teeth and prevent cleft palate, one of the most common birth defects.