Dictionary of Human Evolution and Biology

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Parent-offspring Conflict

Concept that parental fitness is increased by ceasing investment in an offspring that is capable of surviving so that the parent can reproduce sooner; this time may not be the optimal time for the young. Primate females do not ovulate until they stop lactating; consequently, weaning an infant as soon as possible is advantageous for the mother’s (and potential male mates’) reproductive success.

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