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).
Answers. 1  Sperm production begins to occur around the time of puberty and continues throughout a man's life. However, as a male ages the rate of sperm production gradually declines. The average healthy adult male produces a few thousand sperm cells each second. The normal volume of semen that a male ejaculates is 3ml (milliliters) to 5ml; each 1ml of semen normally contains 50 to 100 million sperm.