![]() I am a molecular biologist and am interested in this new study as it further illuminates the genetic contribution to human behavior. ![]() Nonetheless, misconceptions persist that same-sex attraction is a choice that warrants condemnation or conversion, and leads to discrimination and persecution. ![]() Rather, it is a continuum that emerges from a person’s genetic makeup. Numerous studies have established that sex is not just male or female. and the U.K., they concluded that genes account for between 8% and 25% of same-sex behavior. By analyzing the DNA of nearly half a million people from the U.S. In a 2019 issue of Science magazine, geneticist Andrea Ganna at the Broad Institute of MIT and Harvard, and colleagues, described the largest survey to date for genes associated with same-sex behavior. However, biologists have documented homosexual behavior in more than 450 species, arguing that same-sex behavior is not an unnatural choice, and may in fact play a vital role within populations. Despite these numbers, many people still consider homosexual behavior to be an anomalous choice. In the U.S., 1% to 2.2% of women and men, respectively, identify as gay. Across cultures, 2% to 10% of people report having same-sex relations.
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