The Site of Spermatogenesis and the Functional Cell Types Participating (Fig. 1). Spermatogenesis is the process of producing sperm with half the number of chromosomes (hapliod) as somatic cells. The process of spermatogenesis then allows the recombination of male and female haploid gametes at fertilization. This provides genetic contributions from both parents without increasing the number of chromosomes each generation.
ISO, founded in 1947, is a worldwide federation of national standards bodies from some 100 countries, with one standards body representing each member country. The American National Standards Institute (ANSI), for example, represents the United States.
ISO redirects here. For other uses, see ISO (disambiguation). The International Organization for Standardization (ISO; French: Organisation internationale de normalisation; Russian: Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð°Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¿Ð¾ ÑÑÐ°Ð½Ð´Ð°ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¸) is an international standard-setting body composed of representatives from various national standards organizations.