Related Article: https://www.nature.com/articles/d41586-019-02585-6
There has been a large debate on whether there is a certain gene that may identify a certain persons sexuality. Many believe it can be due to genes or can be due to environment, or both. After years of research and evidence, scientists have come to the conclusion that there is no 'gay gene'. They found some variants that may not directly affect sexual attraction but can still change the sexuality of a person. This includes the biological proccesses like male-pattern baldness, or the ability to smell certain chemicals. Even though it was found that not one single 'gay gene' exists, it is still one step closer to understanding human sexuality. It points to having nongenetic or environmental reasons which supports the point that human sexuality is fluid, can change at any time, and falls on a continuum.