Same-Sex Behavior Is br Linked to Genetics, New Study.br The broad international br study of close to half a br million people was published br online in the journal 'Science.'.br It found that while br same-sex behavior was br linked genetically, there is br no single gene correlated to it.br Rather, the study found br that the genetic markers br for same-sex behavior can br found over a range of genes.br Like most human behaviors, br the markers are influenced br by a myriad of both environmental br and genetic factors.br This means that genetic markers br cannot be used to identify same-sex br behavior in an individual.br According to the study, br predicting sexual orientation br based on a person's genome is br "practically impossible.".br Complicated behavior, such as same-sex sexual behavior, is a compilation of genetics and the social environment. It’s not just one or the other, Melinda Mills, Professor University of Oxford, via br 'The Wall Street Journal'.br This new study provides even more evidence that being gay or lesbian is a natural part of human life, [and] also reconfirms the long established understanding that there is no conclusive degree to which nature or nurture influence how a gay or lesbian person behaves, Zeke Stokes, GLAAD CPO, via 'The Wall Street Journal'.br Researchers of the study — br one of the largest of its kind — br have created a website called br "Genetics of Sexual Behavior.