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spermatogonium |
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spermatogonium [spər‚mad·ə′gō·nē·əm] (histology) A primitive male germ cell, the last generation of which gives rise to spermatocytes. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Spermatogenesis, which takes place in the seminiferous tubules of the testes, is the orderly process during which spermatogonia evolve into mature spermatozoa. Yoshizaki says that he and his colleagues don't yet know whether spermatogonia can become eggs in animals other than fish. Stage 1 (differentiation of testis and ovary,) and stage 2 (proliferation of spermatogonia and endogenous growth of the oocyte) fish were immature, whereas stage 3-6 males (onset of meiosis through spermiation) and stage 3-7 females (early vitellogenesis through ovulation) were classified as maturing. |
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