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Earthworms are simultaneous hermaphrodites, having both male and female reproductive organs. Simultaneous hermaphrodites (or homogamous hermaphrodites) are individuals in which both male and female sexual organs are present and functional at the same time. [15] Self-fertilization often occurs. [9]
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 January 2025. Atypical congenital variations of sex characteristics This article is about intersex in humans. For intersex in other animals, see Intersex (biology). Not to be confused with Hermaphrodite. Intersex topics Human rights and legal issues Compulsory sterilization Discrimination Human rights ...
Hermaphrodite is a series of photographs of a young intersex person, who had a male build and stature and may have been assigned female or self-identified as female, taken by the French photographer Nadar (real name Gaspard-Félix Tournachon) in 1860.
Dominance is based on size, the female being the largest and the reproductive male being the second largest. The rest of the group is made up of progressively smaller males that do not breed and have no functioning gonads. [18] If the female dies, in many cases, the reproductive male gains weight and becomes the female for that group.
Intersex people are born with sex characteristics, such as genitals, gonads and chromosome patterns that, according to the UN Office of the High Commissioner for Human Rights, "do not fit the typical definitions for male or female bodies". [1] [2]
This list of related male and female reproductive organs shows how the male and female reproductive organs and the development of the reproductive system are related, sharing a common developmental path. This makes them biological homologues. These organs differentiate into the respective sex organs in males and females.
Intersex is a general term for an organism that has sex characteristics that are between male and female. [1] It typically applies to a minority of members of gonochoric animal species such as mammals (as opposed to hermaphroditic species in which the majority of members can have both male and female sex characteristics). [2]
But unlike sequential hermaphrodites, simultaneous hermaphrodites are both male and female at sexual maturity. Also sex determination does not apply to simultaneous hermaphrodites (except in species with mix mating systems). [4] In simultaneous hermaphrodites, self-fertilization is possible in some species, where in others it is absent. [5]