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Document Type

Grand Teton National Park Report

First Page

33

Last Page

38

Abstract

In the majority of animals, most or all of both pre- and post-zygotic parental investment is contributed by the female of the species. Thus, the females and their ability to invest in offspring represent a limited resource, which must be procured by a male if he is to reproduce successfully. It is on this basis that sexual selection theory predicts that there will be intense competition among males for access to sexually receptive females.

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