In accordance with LeVay and Hamer (1994) , how big the hereditary component in homosexuality both for sexes has ended 50%. A number of hereditary research reports have recommended maternal transmission, showing X connected inheritance. The X chromosome has accumulated genes involved with intercourse, reproduction, and cognition. A meta analysis of four linkage studies proposed that Xq28 plays a essential role in male homosexuality ( Hamer et al., 1993 ). (more…)
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