An international study finds that same-sex sexual behavior is influenced by both genes and non-genetic factors, with thousands of genetic variants that each have a small influence and together explain only a minority of the trait. At the Broad Institute, several members of the Out@Broad group, which includes members of the LGBTQIA+ community and their allies, worked with some of the study authors to raise concerns about the project itself — including whether the authors should have undertaken the research. They also made suggestions around language and scientific figures, and flagged possible misinterpretations of the findings.