Link:
http://news.yahoo.com/s/hsn/20060222/hl_hsn/momsgeneticsmighthelpproducegaysonsSnip: <
By Randy Dotinga
HealthDay Reporter Tue Feb 21, 11:52 PM ET
TUESDAY, Feb. 21 (HealthDay News) -- New research adds a twist to the debate on the origins of sexual orientation, suggesting that the genetics of mothers of multiple gay sons act differently than those of other women.
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Scientists found that almost one fourth of the mothers who had more than one gay son processed X chromosomes in their bodies in the same way. Normally, women randomly process the chromosomes in one of two ways -- half go one way, half go the other.
The research "confirms that there is a strong genetic basis for sexual orientation, and that for some gay men, genes on the X chromosome are involved," said study co-author Sven Bocklandt, a postdoctoral researcher at the University of California at Los Angeles.
The link between genetics and sexual orientation has been a hot topic for more than a decade as a few scientists have tried to find genes that might make people gay or straight. In the new study, Bocklandt and colleagues examined a phenomenon called "X-chromosome inactivation." >
More at the link....