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Gene Linked to Dad's Ability to Father Sons, Daughters

Catherine McDiarmid-Watt | Thursday, January 08, 2009 | 0 comments

NEW YORK (Reuters Health) - A UK researcher has a new explanation for how the human race manages to keep a fairly even balance of males and females, despite massive deaths of young males in war and selective abortion of female fetuses in certain parts of the world.

Corry Gellatly, a research scientist at Newcastle University, proposes that there's a gene that determines whether a man will father more sons, more daughters, or equal numbers of each. When females are in short supply, they have a better chance of snagging a mate, and are thus more likely to pass the gene for fathering daughters on to their offspring. And when men are scarce, they have a better chance of mating and passing along the gene for having sons.

Full story: Evolutionary Biology, published online December 11, 2008.
http://www.reuters.com/article/healthNews/idUSTRE5001SV20090102?feedType=nl&feedName=ushealth1100

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About Catherine: I am mom to three grown sons, two grandchildren and two rescue dogs. After years of raising my boys as a single mom, I remarried a wonderful man who had never had a child of his own. Unexpectedly, I found myself pregnant at 49!
Sadly we lost that precious baby at 8 weeks, and decided to try again. Five more losses, turned down for donor egg, foster care and adoption due to my age and losses - we have accepted that there will be no more babies in our house.

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