Direct-to-consumer “How Gay Are You?” app sold by GenePlaza has been criticized for being misleading and irresponsible. 

The largest study of its kind to date estimates that genetics accounts for at most 8–25 percent of variation in whether or not a person reports engaging in non-heterosexual behaviors.

A genomic interrogation of homosexuality turns up speculative links between genetic elements and sexual orientation, but researchers say the study is too small to be significant. 

The virus can be transmitted by unprotected anal sex between men, according to a CDC report.

In a small study of male twins, nine methylation sites helped researchers predict a person’s sexual orientation.

The largest study yet of the genetic roots of homosexuality links sexual preference in men to two regions of the genome.

Sex is an inherently fascinating aspect of life. As researchers learn more and more about it, surprises regularly emerge.

Researching the causes of sexual orientation should be guided by scientific, not social, concerns.

Scientists who study the biological roots of sexual orientation should continue working with educators, policy-makers, and the public to put their data to good use.

Meet some of the people featured in the July 2014 issue of The Scientist

Watch NIH researcher and Critic at Large Dean Hamer describe the nuances of his research into the genetics of sexual orientation.

A round-up of recent discoveries in behavior research

Scientists propose a new model for how homosexuality develops, but observers say it will be difficult to test.