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Brother sister insect

An incest taboo is any cultural rule or norm that prohibits sexual relations between closely related persons. All human cultures have norms that exclude certain close relatives from those considered suitable or permissible insect or marriage partners, making such relationships taboo.

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However, different norms exist among cultures as to which blood relations are permissible as sexual partners and which are not. Sexual relations between related persons which are subject to the taboo are called incestuous relationships. Some cultures proscribe sexual relations between clan sister, even when no traceable biological relationship exists, while members of other clans are permissible irrespective of the existence of a biological relationship. In many cultures, certain types of cousin relations are preferred as sexual and marital partners, whereas in others these are taboo.

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In some instances, brother—sister marriages have been practised by the elites with some regularity. Parent—child and sibling—sibling unions are almost universally taboo. Debate about the origin of the incest taboo has often been framed as a question of whether it is based in nature or nurture. One explanation sees the incest taboo brother a cultural implementation of a biologically evolved preference for sexual partners with whom one is unlikely to share genes, since inbreeding may have detrimental outcomes.

The most widely held hypothesis proposes that the so-called Westermarck effect discourages adults from engaging in sexual relations with individuals with whom they grew up.

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The existence of the Westermarck effect has achieved some empirical support. Another school argues that the incest prohibition is a cultural construct which arises as a side effect of a general human nikki sims tube for group exogamywhich insect because intermarriage between groups construct valuable alliances that improve the ability for both groups to thrive. According to this view, the incest taboo brother not necessarily universal, but young and naughty likely to arise and become more strict under cultural circumstances that favour exogamy over endogamyand likely to become sister lax under circumstances that favor endogamy.

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