From The Independent:
Genetics may explain why children who live in homes without fathers have sex at a younger age than others, according to a report published today.
The study, published in the American journal Child Development, found a genetic theory to challenge "environmental" theories which previously explained the link.
Researchers looked at more than 1,000 cousins aged 14 and older, testing for genetic influences as well as factors such as poverty, education opportunities and religion.
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