Compared with men who do not have older brothers,men who have older brothers are somewhat more likely to

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Quizplus · Accepted Answer

Research indicates that having older brothers increases the likelihood of a man being homosexual. This phenomenon is known as the fraternal birth order effect. It is believed to be due to the development of antibodies in the mother's body during pregnancy that affect the brain development of male fetuses. This effect does not appear to be related to premature ejaculation, erectile disorder, or refractory period.

Compared with Men Who Do Not Have Older Brothers,men Who