| A | B |
|---|
| gene | segment of DNA that codes for RNA and protein |
| chromosomes | organizes and packages DNA |
| chromatin | highly condensed chromosome |
| histone | protein found in eukaryotic chromosomes |
| nucleosome | wraps around the center of histones |
| chromatid | condensed strand of DNA |
| centromere | holds sister chromatids together |
| cell cycle | a repeated sequence of cellular growth and division |
| interphase | the first phase of mitosis |
| mitosis | process of cell division |
| cytokinesis | cytoplasm is divided |
| spindle | network of microtubules |
| centrosome | help assemble the spindle |
| cancer | disease caused by uncontrolled cell growth |
| tumor | a mass of defective cells |
