The NCAA has instituted strict guidelines for eligibility under medical exceptions for banned substances, including stimulants used to treat ADHD/ ADD, medications for male-pattern baldness, peptide hormones (hGH), and anabolic steroids (testosterone) or any other medications banned* by the NCAA.
Meiosis also differs from mitosis in that it involves a process known as recombination, during which chromosomes exchange segments with one another. As a result, the gametes produced during meiosis are genetically unique.
Spermatogenesis produces haploid male gametes that are able to fertilise a mature oocyte. Due to the limited life span of sperm cells, production is a continous process and maintains a daily output of >200 million differentiated sperm.