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How The Female Body Has Driven Evolution

Intelligence Squared

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Perceived Social Change and the Bruce Effect

Perceived social change can lead to stress in female rodents, resulting in the Bruce effect where they miscarry in the presence of an unknown male. This social stress triggers a reproductive advantage for the female, as it prevents infanticide by the new male and allows her to enter a reproductive cycle sooner. This phenomenon is not limited to rodents and has implications for understanding reproductive behavior in response to social dynamics.

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