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Revealed: Why homosexuality occurs
Updated On: 13 December, 2012 12:05 PM IST | | ANI
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, researchers say
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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.
From an evolutionary standpoint, homosexuality is a trait that would not be expected to develop and persist in the face of Darwinian natural selection. Homosexuality is nevertheless common for men and women in most cultures.
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