Discuss the research findings regarding the causes of one's sexual orientation, especially research related to the causes for homosexuality

What will be an ideal response?

Answer will include that available evidence suggests that sexual orientation is at least partly hereditary. One study found that if one identical twin is homosexual or bisexual, there is a 50 percent chance that the other twin is, too. Similar findings lead some researchers to estimate that sexual orientation is 30 to 70 percent genetic. However, no "gay genes" have yet been identified. As a consequence, researchers have begun to focus on epigenetics, the study of how genes are expressed during development. another theory is that variations in prenatal hormone levels influences the development of sexual orientation in the fetus. According to the prenatal hormonal theory of homosexuality, some male fetuses are exposed to too little testosterone. Similarly, some female fetuses are exposed to too much testosterone. These differences, in turn, can impact sexual orientation. Incidentally, many people mistakenly believe that homosexuality is caused by a hormone imbalance in adulthood. However, it is highly unlikely that adult hormone levels affect sexual orientation because the hormone levels of most gay men and lesbians are within the normal range. Hormonal
difference during pregnancy may alter areas of the unborn child's brain that orchestrate sexual behavior. Support for this idea comes from the finding that parts of the hypothalamus, which is connected with sexual activity, differ in size in heterosexuals and homosexuals. Furthermore, differences in neurotransmitter levels have been detected in the hypothalamus in homosexual and heterosexual persons.
Consistent with the biological view of sexual orientation, it is unlikely that parenting makes children homosexual. There is little difference between the development of children with gay or lesbian parents and those who have heterosexual parents. Most lesbians and gay men were raised by heterosexual parents, and most children raised by gay or lesbian parents become heterosexual. Although learning contributes to one's sexual orientation, it appears that nature strongly prepares people to be either homosexual or heterosexual.