The goal of the Defense Threat Reduction Agency is to reduce the threat of Weapons of Mass Destruction (WMD) to the United States by either eliminating foreign stockpiles or mitigating their risk to the U.S. and its allies.
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 seminiferous tubules of the male testes in a stepwise fashion.aturation occurs in the epididymis. The location [Testes/Scrotum] is specifically important as the process of spermatogenesis requires a lower temperature to produce viable sperm, specifically 1Â°-8 Â°C lower than normal body temperature of 37 Â°C (98.6 Â°F).
Spermatogenesis through the process of meiosis takes place within the thin seminiferous tubules, which loop tightly throughout the testes to a tremendous length (perhaps as much as a mile between the two testes) ... Click to read more below.The seminiferous tubules are the site of the germination, maturation, and transportation of the sperm cells within the male testes. Seminiferous tubules are made up of columnar Sertoli cells surrounded by spermatogenic cells on the epithelial interior and stem cells exteriorly.permatogenesis through the process of meiosis takes place within the thin seminiferous tubules, which loop tightly throughout the testes to a tremendous length (perhaps as much as a mile between the two testes) ... Click to read more below.