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.
When making gametes using meiosis, the cells that are produced (sperm or ovum) only pick up one chromosome from each pair, giving a total of 23 chromosomes (in humans) This happens so that when two gametes fuse (at fertilisation) the normal number of chromosomes is restored (23 + 23 = 46 = 23 pairs).