SIOUX CITY, IOWA — At the lectern in a packed convention center last month, Rick Santorum spoke haltingly, not for the first or the last time, about his seriously ill youngest daughter, Isabella , who has the genetic disorder Trisomy 18 . Half of all children with the chromosomal anomaly, more common in girls, are stillborn. And of those who do survive, only one in 10 makes it to her first birthday. Read full article > >

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GOP hopeful Rick Santorum campaigns with a seriously ill daughter at home

The newly sequenced DNA of the kangaroo reveals some of the genetic secrets behind its remarkable biology.

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How the kangaroo got its bounce

Research involving more than 180,000 people has shed light on the complexity of the genetic code which governs our height.

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Research widens height gene hunt