性差

せいさ
sex difference

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せいさ【性差】

sexual distinction

〖U〗.

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せいさ【性差】

a sexual difference; sexual differentiation; (a) difference [differentiation] between the sexes. [⇒せいさべつ]

●睡眠パターンには性差が大きく関係する. The differences between the sexes has much to do with sleeping patterns.

●性差の生物学的研究 research into the biology of sexual difference(s) [differentiation].