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.
What is ISO â How to Use ISO on Digital and Phone Cameras. ISO is usually defined as the âsensitivityâ of the cameraâs sensor. This idea is carried over from the days of film, when it was a measure of how photosensitive the filmâs chemicals were â that is, how quickly they darkened under light.