UM-Bot Posted March 1, 2009 #1 Share Posted March 1, 2009 Scientists have found why mammals grow only a single row of teeth while some species such as sharks grow several."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."View: Full Article | Source: PhysOrg.com Link to comment Share on other sites More sharing options...
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