Editing Sex organ (section)

== Terminology ==
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The ''primary sex organs'' are the [[gonad]]s, a pair of internal sex organs, which diverge into [[testicle]]s following male development or into [[Ovary|ovaries]] following female development.<ref>{{Cite encyclopaedia |title=Gonad |url=https://www.britannica.com/science/gonad |access-date=2024-08-21 |encyclopaedia=Encyclopædia Britannica |language=en}}</ref> As primary sex organs, gonads generate reproductive [[gamete]]s containing inheritable [[DNA]]. They also produce most of the primary hormones that affect sexual development, and regulate other sexual organs and sexually differentiated behaviors.

''Secondary sex organs'' are the rest of the reproductive system, whether internal or external. The [[Latin]] term ''genitalia'', sometimes anglicized as ''genitals'', is used to describe the externally visible sex organs.

In general [[zoology]], given the great variety in organs, physiologies, and behaviors involved in [[copulation (zoology)|copulation]], male genitalia are more strictly defined as "all male structures that are inserted in the female or that hold her near her [[gonopore]] during sperm transfer"; female genitalia are defined as "those parts of the female reproductive tract that make direct contact with male genitalia or male products (sperm, [[spermatophores]]) during or immediately after copulation".<ref>Eberhard, W.G., 1985. Sexual Selection and Animal Genitalia. Harvard University Press</ref>{{Page needed|date=August 2021}}