When examining the rates of homosexuality between identical twins and fraternal twins or non-twin siblings, the following has been reported

When examining the rates of homosexuality between identical twins and fraternal twins or non-twin siblings, the following has been reported by research: if one identical twin is gay, his brother has a ________% chance of being gay as well. If a fraternal twin is gay, his brother has a ________% chance of being gay as well.

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