While A(single) spermatogonia comprise the rodent SSC pool, the identity of the stem cell pool in the primate spermatogenic lineage is not well established. The prevailing model is that primate spermatogenesis arises from A(dark) and A(pale) spermatogonia, which are considered to represent reserve and active stem cells respectively. Clonal development in the spermatogenic lineages of rodents, monkeys and humans. Undifferentiated spermatogonia are described as A s, A pr or A al in the rodents and A dark or A pale in monkey and human. During spermatogenic development, A single (A s) and A dark and/or A pale undergo one or more mitotic divisions to give rise to cells of larger clones (chains) of interconnected cells sizes 3.3 Gametogenesis. The primary sex organs - the testis in the males and the ovaries in the female s - produce gametes, i.e, sperms and ovum, respectively, by the process called gametogenesis.In testis, the immature male germ cells (spermatogonia) produce sperms by spermatogenesis that begins at puberty. The spermatogonia (sing. spermatogonium) present on the inside wall of seminiferous View history Tools From Wikipedia, the free encyclopedia Normal spermatogenesis, testis biopsy. High-power view of a seminiferous tubule with normal spermatogenesis. Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis. A spermatozoon is a male germ cell capable of fertilizing an oocyte and carries genetic information for determining the sex of the offspring. It comprises autosomes and an X (X spermatozoa) or a Y chromosome (Y spermatozoa). The origin and maturation of both X and Y spermatozoa are the same, however, certain differences may exist. Previous studies proposed a substantial difference between X Spermatogenesis: It is the process of formation of haploid spermatozoa (sperms) from diploid spermatogonia inside the testes of the male. It occurs in the seminiferous tubules of the testes. Oogenesis: It is the process of formation of functional haploid ova from the diploid germinal cells in the ovary. Spermatogenesis vs Oogenesis. 5wjs.

difference between spermatogenesis and spermatogonia