The more older brothers that a man has, the _____ likely he is to be gay, and this is _____ if he is raised by an adoptive family apart from his biological brothers.

Question

Quizplus · Accepted Answer

Research suggests that the likelihood of a man being gay increases with the number of older brothers he has, a phenomenon often referred to as the "fraternal birth order effect." This effect is believed to be related to biological factors, specifically prenatal conditions, and is not affected by whether the brothers are raised together or apart.

The More Older Brothers That a Man Has, the _____