| A | B |
|---|
| Longest phase of the cell cycle | Interphase |
| The physical division of the cytoplasm | Cytokinesis |
| Cell division which results in two identical daughter cells | Mitosis |
| Stage of cell cycle in which centrioles and DNA are replicated | S phase |
| The diploid (2n) number of chromosomes in humans | 46 |
| Two identical copies of a chromosome attached at the centromere | Sister chromatids |
| Act as the organization center for spindle fibers | Centrioles |
| Term that describes chromosomes that contain the same genes | Homologous |
| Point of attachment between sister chromatids | Centromere |
| Proteins around which DNA is wound | Histones |
| Containing a single set of chromosomes | Haploid |
| Process where homologous chromosomes exchange parts | Crossing over |
| The failure of sister chromatids to separate during anaphase | Nondisjunction |
| Phase during which the cell grows | G1 |
| Process of egg and sperm fusing into one cell | Fertilization |
| Another name for egg and sperm | Gametes |
| Process involving two cellular divisions | Meiosis |
| Process which produces haploid cells | Meiosis |
| Having the incorrect number of chromosomes | Aneuploidy |
| Having three copies of a chromosome | Trisomy |
| The organization of chromosomes in homologous pairs by size and appearance | Karyotype |
| Small structures formed from unequal division of cytoplasm during meiosis | Polar bodies |
| Term that refers to a pair of chromosomes in metaphase I of meiosis | Tetrad |
| Structure which produces ribosomal RNA | Nucleolus |
| Form of DNA during interphase | Chromatin |
| Term for the formation of sperm | Spermatogenesis |
| Term for the formation of ova (eggs) | Oogenesis |
| Another name for trisomy 21 | Down Syndrome |
| Disorder in which a female has an XO karyotype | Turner's Syndrome |
| Containing only one copy of a given chromosome | Monosomy |
| Disorder in which a male has two X chromosomes and a Y chromosome | Klinefelter's Syndrome |
