Though some of the research is inconclusive, identify the findings about biological factors and their effect on sexual orientation as either true or false.
mothers who have already given birth to one boy may develop an immune reaction when pregnant with another boy, which alters the hormones in the prenatal environment.
females who were exposed to androgens while in the womb are more likely to report being lesbians.
gay men have higher levels of estrogen, and lesbian women have higher levels of testosterone.
researchers have found a single gene in humans that, when altered, causes people to reverse their sexual orientation.
there is an area of the hypothalamus that is smaller in gay men than it is in straight men.
identical twins are more likely than fraternal twins to have the same sexual orientation.