| A | B |
|---|
| chromosome | structure composed of DNA wrapped around protein |
| chromatin | a mass of uncoiled chromosomes |
| centrioles | paired structures found in animal cells that are involved in organization of the spindle |
| centromere | region where two sister chromatids are joined |
| chromatid | one strand of a duplicated chromosome |
| interphase | stage of the cell cycle when the DNA is in the form of chromatin |
| synthesis | stage of the cell cycle when DNA is replicated |
| replication | process in which DNA is copied |
| spindle | assembly of protein fibers that act to separate |
| nuclear membrane | structure surrounding the nucleus that breaks down during prophase |
| mitosis | cell division in which the number of chromosomes does NOT change; division of the nucleus |
| cytokinesis | division of the cytoplasm |
| prophase | first stage of mitosis |
| metaphase | stage of mitosis in which chromosomes are aligned at the cell's equator |
| anaphase | stage of mitosis in which sister chromatids are pulled towards opposite poles of the cell |
| telophase | stage of mitosis in which the events of prophase are reversed and two daughter cells are formed |
| body cells | type of cells formed by mitosis |
| diploid number | refers to the number of chromosomes in a body cell, when chromosomes occur in pairs. Designated as 2n |
| haploid number | number of chromosomes in a gamete (sex cell), sometimes called monoploid number; designated as n |
| DNA | molecule that stores genetic information; what genes are composed of! |
