For 10 points, name this process of cell division in which the resulting daughter cell has half the number of chromosomes unlike mitosis.
The first step of this process involves a condensation step called leptotene. A failure of one stage of this process is known as (*) non-disjunction and results in diseases like Turner or Klinefelter Syndrome. The end of its first step involves an exchange of material called crossing over. Those conditions occur when chromosomes fail to properly separate during this process which involves the division of a diploid cell into four haploid cells. For 10 points, name this process of cell division in which the resulting daughter cell has half the number of chromosomes unlike mitosis.
The first step of this process involves a condensation step called leptotene.
{meiosis} [do not accept “mitosis”, accept {prophase} I before “non-disjunction” is read]