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Gonadogenesis is one of the many particular stages organogenesis. In animal development, organogenesis is the process by which the Ectoderm, Endoderm, and Mesoderm develop into the Internal organs As the body develops from a single celled zygote into a fetus, and eventually a baby, many steps are taken in an effort to promote cell-differentiation and specialization. For other meanings see Zygote (disambiguation. A zygote (from Greek ζυγωτός zugōtos "joined" or "yoked" A fetus (or foetus or fœtus) is a developing Mammal or other Viviparous Vertebrate, after the Embryonic stage and Gonadogenesis refers to the more specific changing of cells into a uterus in females or a vas deferens in males. The uterus (from the Latin word for womb) is the major Female reproductive organ of most Mammals including Humans One end the The vas deferens (plural vasa deferentia also called ductus deferens, ( Latin: "carrying-away vessel" is part of the Male Anatomy

Gonadogenesis is not fully understood, however, the importance of the GON-4 gene is apparent. Additional HOX genes are factors as well.

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