Studies have found that identical twins, who share genetic material, are more likely to be gay or lesbian than other siblings.

Name: Studies have found that identical twins, who share genetic material, are more likely to be gay or lesbian than other siblings.
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Research on identical twins has found that if one twin is gay, the other twin is more likely to also be gay compared to fraternal twins or non-twin siblings. This suggests that there may be a genetic component to sexual orientation.

Studies Have Found That Identical Twins, Who Share Genetic Material