| A | B |
|---|
| Mitosis | Process of copying chromosomes when one cell divides to make two. |
| Meiosis | Process of chromosome reduction when one cell produces sex cells |
| Interphase | Phase in which chromosomes are copied |
| Zygote | A fertilized egg |
| Cytokinesis | The dividing of the cytoplasm between two daughter cells |
| XY | Male sex alleles |
| XX | Female sex alleles |
| Anaphase | Chromosomes move away from equator of cell and toward the poles |
| Metaphase | Chomosomes are lined up across the equator of the cell |
| Chromatids | Chromosomes that are copies of each other |
| Telophase | Nuclear membrane forms |
| Prophase | Chromatids are together, centrioles move toward poles and nuclear membrane disappears |
| Sperm | Male sex cell formed by meiosis |
| Egg | Female sex cell formed by meiosis |
| 23 | Chromosomes in human sex cell |
| 46 | Chromosomes in human body cell |
| 2 | Number of human sex chromosomes |
| Chromosome | Made of DNA and contains genes |
| Nucleus | Organelle containing chromosomes |
| Replication | Process of copying a chromosome |
| Chromatin | The threadlike (not condensed into rods) form of DNA |
| Cytoplasm | Cellular material outside the nucleus |
