| A | B |
|---|
| Homologous | Similar, but not identical |
| Haploid | Contains only a single set of chromosomes (N or 1N) |
| Diploid | Contains both sets of chromosomes (2N) |
| Meiosis | The process by which cells reduce their chromosome number |
| Gamete | Sex cell |
| Zygote | Fertilized egg |
| Meiosis I | Stage of meiosis that is SIMILAR to mitosis |
| Meiosis II | Stage of meiosis that is VIRTUALLY IDENTICAL to mitosis |
| Prophase I | Stage of meiosis where crossing-over happens |
| Spermatogenesis | Creation of sperm (meiosis in the male) |
| Oogenesis | Creation of eggs (meiosis in the female) |
| Metaphase I | Stage of meiosis where paired homologous chromosomes line up along "equator" |
| Anaphase I | Homologous chromosomes separate and move to opposite poles |
| Telophase I | Stage of meiosis where nuclear membrane PARTIALLY re-forms around two nuclei |
| Somatic | Non-sex cell |
| Nondisjunction | Chromosome pairs that do not properly separate during meiosis |
