Gays1,000 pairs of gay brothers are taking part in the largest study to date seeking genes that may influence whether people are gay. If fresh evidence is found suggesting genes are involved, perhaps homosexuality will be viewed as no different than other genetic traits like height and hair color.

The federally funded study, led by Chicago-area researchers, will rely on blood or saliva samples to help scientists search for genetic clues to the origins of homosexuality. Parents and straight brothers also are being recruited.

While initial results aren’t expected until next year — and won’t provide a final answer — skeptics are already attacking the methods and disputing the presumed results.

Previous studies have shown that sexual orientation tends to cluster in families, though that doesn’t prove genetics is involved. Extended families may share similar child-rearing practices, religion and other beliefs that could also influence sexual orientation.

Read the full article @ Newsvine >>>