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- Spermatogenesis abstract "Spermatogenesis is the process in which spermatozoa are produced from male primordial germ cells by way of mitosis and meiosis. The initial cells in this pathway are called spermatogonia, which yield primary spermatocytes by mitosis. The primary spermatocyte divides meiotically into two secondary spermatocytes; each secondary spermatocyte then completes meiosis as it divides into two spermatids. These develop into mature spermatozoa, also known as sperm cells. Thus, the primary spermatocyte gives rise to two cells, the secondary spermatocytes, and the two secondary spermatocytes by their subdivision produce four spermatozoa.Spermatozoa are the mature male gametes in many sexually reproducing organisms. Thus, spermatogenesis is the male version of gametogenesis. In mammals it occurs in the male testes and epididymis in a stepwise fashion. Spermatogenesis is highly dependent upon optimal conditions for the process to occur correctly, and is essential for sexual reproduction. DNA methylation and histone modification have been implicated in the regulation of this process. It starts at puberty and usually continues uninterrupted until death, although a slight decrease can be discerned in the quantity of produced sperm with increase in age (see Male infertility).".
- Spermatogenesis thumbnail Seminiferous_tubule_and_sperm.jpg?width=300.
- Spermatogenesis wikiPageExternalLink anim0043.swf.
- Spermatogenesis wikiPageExternalLink male_infertility_spermatogenesis.
- Spermatogenesis wikiPageID "505484".
- Spermatogenesis wikiPageRevisionID "605855643".
- Spermatogenesis caption "A mature human Spermatozoon".
- Spermatogenesis caption "Seminiferous tubule with maturing sperm. H&E stain.".
- Spermatogenesis hasPhotoCollection Spermatogenesis.
- Spermatogenesis image "Simplified spermatozoon diagram.svg".
- Spermatogenesis name "Spermatogenesis".
- Spermatogenesis width "250".
- Spermatogenesis subject Category:Animal_physiology.
- Spermatogenesis subject Category:Developmental_biology.
- Spermatogenesis subject Category:Mammal_male_reproductive_system.
- Spermatogenesis type AnatomicalStructure.
- Spermatogenesis type BiologicalObject.
- Spermatogenesis comment "Spermatogenesis is the process in which spermatozoa are produced from male primordial germ cells by way of mitosis and meiosis. The initial cells in this pathway are called spermatogonia, which yield primary spermatocytes by mitosis. The primary spermatocyte divides meiotically into two secondary spermatocytes; each secondary spermatocyte then completes meiosis as it divides into two spermatids. These develop into mature spermatozoa, also known as sperm cells.".
- Spermatogenesis label "Espermatogénesis".
- Spermatogenesis label "Espermatogênese".
- Spermatogenesis label "Spermatogenese".
- Spermatogenesis label "Spermatogenese".
- Spermatogenesis label "Spermatogenesi".
- Spermatogenesis label "Spermatogenesis".
- Spermatogenesis label "Spermatogeneza".
- Spermatogenesis label "Spermatogenèse".
- Spermatogenesis label "Сперматогенез".
- Spermatogenesis label "مراحل تكوين الحيوانات المنوية".
- Spermatogenesis label "精子发生".
- Spermatogenesis sameAs Spermatogeneze.
- Spermatogenesis sameAs Spermatogenese.
- Spermatogenesis sameAs Espermatogénesis.
- Spermatogenesis sameAs Espermatogenesi.
- Spermatogenesis sameAs Spermatogenèse.
- Spermatogenesis sameAs Spermatogenesis.
- Spermatogenesis sameAs Spermatogenesi.
- Spermatogenesis sameAs Spermatogenese.
- Spermatogenesis sameAs Spermatogeneza.
- Spermatogenesis sameAs Espermatogênese.
- Spermatogenesis sameAs m.02jhmk.
- Spermatogenesis sameAs Q36961.
- Spermatogenesis sameAs Q36961.
- Spermatogenesis wasDerivedFrom Spermatogenesis?oldid=605855643.
- Spermatogenesis depiction Seminiferous_tubule_and_sperm.jpg.
- Spermatogenesis isPrimaryTopicOf Spermatogenesis.
- Spermatogenesis name "Spermatogenesis".