mating|45.6E: Mating Systems and Sexual Selection,xhamster 720p

Since the beginning of life in the sea, adaptation has taught animals to establish relationships with other beings. No one on the planet wants to be forever alone, and all。

In biology, mating is the pairing of either opposite-sex or hermaphroditic organisms for the purposes of sexual reproduction. Fertilization is the fusion of two gametes. [1] . Copulation is。

In mating, there are two types of selection (intersexual, intrasexual) and three mating systems (monogamous, polygynous, polyandrous).

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