Interesting new study on Genetic links to Homosexuality.
The study showed that Male sexual orientation is influenced by genes. Scientists tested the DNA of 400 gay men and found that genes on at least two chromosomes affected whether a man was gay or straight.
[This study is a larger study cofirming the results of an earlier study – some details here ]https://www.youtube.com/watch?v=9zno8e4R6gA]
From the article
While genes do contribute to sexual orientation, other multiple factors play a greater role, perhaps including the levels of hormones a baby is exposed to in the womb. "Sexual orientation has nothing to do with choice," said Bailey. "We found evidence for two sets [of genes] that affect whether a man is gay or straight. But it is not completely determinative; there are certainly other environmental factors involved."