Moontanman Posted February 28, 2009 Report Posted February 28, 2009 Science News Share Blog Cite Print Email BookmarkScientists Discover Why Teeth In Mammals, But Not Sharks, Form In A Single RowScienceDaily (Feb. 27, 2009) — A system of opposing genetic forces determines why mammals develop a single row of teeth, while sharks sport several, according to a study published 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. Scientists Discover Why Teeth In Mammals, But Not Sharks, Form In A Single Row Quote
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