Father's genes can delay baby's birth.
A father's genes can increase the risk of a lengthy pregnancy by 30 per cent, new research shows. The discovery was made by Danish researchers analysing late births in pregnant women.
Paragraph two of the article states:
"They found that women who had an unusually long first pregnancy, were less significantly less likely to have a second long pregnancy if the second baby had a different father"
http://www.newscientist.com/news/news.jsp?id=ns99993447
Research: BMJ 2003; 326: 476. Risk of recurrence of prolonged pregnancy
Annette Wind Olesen, Olga Basso, and Jørn Olsen.
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