A man with older brothers is more likely to be gay than a man without

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A man with older brothers is more likely to be gay than a man without

A man with older brothers is more likely to be gay than a man without older brothers. Each additional older brother increases the probability of being gay by about one-third. This effect is called fraternal birth order effect

A man with older brothers is more likely to be gay than a man without older brothers. Each additional older brother increases the probability of being gay by about one-third. This effect is called the fraternal birth order effect

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