Sex organ

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A sex organ, or primary sexual characteristic, as narrowly defined, is any of the anatomical parts of the body which are involved in sexual reproduction and constitute the reproductive system in a complex organism; flowers are the reproductive organs of flowering plants,[1] cones are the reproductive organs of coniferous plants,[2] whereas mosses, ferns, and other similar plants have gametangia for reproductive organs.[3]

Contents

Animals

Mammals

In mammals, sex organs include:

Development

In typical prenatal development, sexual organs originate from a common anlage anatomy during early gestation and differentiate into male or female variations. The SRY gene, usually located on the Y chromosome and encoding the testis determining factor, determines the direction of this differentiation. The absence of it allows the gonads to continue to develop into ovaries.

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