| Term | Definition |
| Primordial germ cells | Germ line stem cells |
| Male meiosis | Doesn't being until puberty |
| Spermatogonia | Divide by mitosis |
| Primary spermatocyte | is 2n 4N until after first meiotic division |
| Secondary spermatocyte | Is haploid 2N |
| Secondary spermatocyte | Divides in meiosis II |
| Spermatid | Is haploid 1N |
| Female meiosis | Begins in the fetus |
| Prophase I of meiosis I | Oocyte is arrested until puberty |
| Meiosis I | Yields a secondary oocyte and a polar body |
| Ovulation | Releases the oocyte arrested in metaphase II |
| Gametogenesis | Requires both mitosis and meiosis |
| Capacitation | Sperm undergo final maturation step in the female reproductive tract |
| Granulosa cells | Ovulated secondary oocyte is surrounded by |
| Zona pellucida | Ovulated secondary oocyte is surrounded by |
| Chromatid | A condensed DNA molecule |
| Meiosis I | Homologous chromosomes pair up during synapsis to form a bivalent |
| Mitosis | Homologous chromosomes do not pair |
| Mitosis | Homologous chromosomes do not separate |
| Mitosis | Sister chromatids separate |
| Meiosis I | Homologous chromosomes may pair and recombine |
| Meiosis I | Homologous chromosomes separate |
| Meiosis I | Sister chromatids do not separate |
| Meiosis II | Sister chromatids separate |
| Independent assortment | Maternal and paternal homologues go to different gametes |
| Synapsis | Pairing of homologous chromosomes |
| Chiasmata | Points where chromatids cross-over |
| Synapsis | Only occurs in metaphase I |
| Fertilization | Fusion of sperm and secondary oocyte |
| Zygote | Male and female pronuclei fuse to form |
| Ampulla of the oviduct | Fertilization usually takes place |
| Acrosome | Releases enzymes to weaken zona pellucida to allow fusion |