Epigenetics, not genetics, underlies homosexuality, study suggests
Tuesday, December 11, 2012 - 09:30
in Biology & Nature
Epigenetics -- how gene expression is regulated by temporary switches, called epi-marks -- appears to be a critical and overlooked factor contributing to the long-standing puzzle of why homosexuality occurs. According to the study, sex-specific epi-marks, which normally do not pass between generations and are thus "erased," can lead to homosexuality when they escape erasure and are transmitted from father to daughter or mother to son.