Note that the primary spermatocyte, which is a daughter of the spermatogonium contains the diploid number of chromosomes (46). Of these 46 chromosomes, two are sex chromosomes (XY), which determine the gender of the individual. During prophase of the first meiotic division the pairs of chromosmes align with each other. Each chromosome consists of two strands of DNA. These strands are called chromatids. At the end of the first meiotic division, half of the chromosomes, each consisting of two chromatids, are distributed to each daughter cell.