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Health

Study seeks to
gauge roles of genetics in sexual orientation

Study seeks to
gauge roles of genetics in sexual orientation

Researchers will test gay brothers to examine genetic links to sexual orientation.

Researchers in the Chicago area are launching a study of gay men and their siblings to determine the role of genetics--as well as masculinity and femininity--in sexual orientation, GayHealth.com reports.

Scientists from the Evanston Northwestern Healthcare Research Institute, Northwestern University, the University of Chicago, and the University of Illinois at Chicago are studying gay men who have at least one living gay brother. Both brothers will provide blood samples for genetic analysis as well as fill out questionnaires about their sexual interests and experiences; memories of gender-related behavior in childhood and adulthood; and a host of other demographic and medical questions.

Researchers plan to recruit study subjects at gay pride parades and festivals in Chicago, Los Angeles, Toronto, Seattle, and other major cities. Overseas study participants are being recruited through the Molecular Genetic Study of Sexual Orientation's Web site at www.gaybros.com.

The research is funded through the National Institutes of Health. The study will include approximately 1,000 pairs of gay brothers from the United States, Canada, and other English-speaking countries. (The Advocate)

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