Genes May Explain Why Children Who Live Without Dads Have Earlier Sex, University of Oregon Study Published: Sep 15, 2009 BBC News -- The fact that children raised in homes without a dad have sex earlier is down to their genes, say US researchers. Related links ScienceBlog This will open in a new window Press Assoc. (PA) This will open in a new window BBC News This will open in a new window Email this Facebook Twitter LinkedIn Pinterest Reddit Back to news