In several research studies, the incidence of same-gender sexual orientation was greater for those siblings of a gay male who were

Name: In several research studies, the incidence of same-gender sexual orientation was greater for those siblings of a gay male who were
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Question

In several research studies, the incidence of same-gender sexual orientation was greater for those siblings of a gay male who were ​

Quizplus · Accepted Answer

Identical twins share 100% of their genes, so if one twin is gay, the likelihood of the other being gay is higher compared to fraternal twins, adoptive brothers, or half-brothers, suggesting a genetic component to sexual orientation.

In Several Research Studies, the Incidence of Same-Gender Sexual Orientation