Homosexuality is Biological, Not Genetic

Science: Homosexuality Isn't Genetic, but It Is Biological

Researchers from UC Santa Barbara and Uppsala University found a biological basis for same-sex attraction, locating the origins of homosexuality in the womb. Epi-marks, the genetic switches that regulate how our genes express themselves, can be passed down from mother to son or father to daughter while the fetuses gestate, the researchers found, adding that certain "sexually antagonistic" epi-marks may also be involved. 

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