Role of biology in sexual orientation

Role of biology in sexual orientation essay assignment

The development of sexual attraction begins in the human body as a glandular response to sex hormones (Broderick & Blewitt, 2015). A series of chemical reactions starting in the brain, stimulate the onset of puberty, including the development of sexual characteristics (Broderick & Blewitt, 2015). Half of all adolescents have had sexual experiences with members of the same sex (Broderick & Blewitt, 2015). As sexuality develops, so too does sexual orientation. Many researchers agree that sexual orientation may be related to genetics (Broderick & Blewitt, 2015). Increased prenatal exposure to masculinizing hormones in girls, and delayed exposure to masculinizing hormones in boys is associated with higher rates of homosexual behavior and fantasies (Broderick & Blewitt, 2015). Some research points to traits such as handedness and digit ratio as predictors of homosexual or heterosexual orientation (Broderick & Blewitt, 2015). In a study of adult lesbian women, individuals who believe their “gayness” is an inborn trait, as opposed to environmental, display higher levels of psychological well-being (Morandini, Blaszczynski, Costa, Godwin, & Dar-Nimrod, 2017).

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Role of biology in sexual orientation