| A | B |
|---|
| cytokinesis | the final stage of the cell cycle in which cell's cytoplasm divides, distributing the organelles into each of the two new cells, two daughter cells result, each with the same number of identical chromosome as the original parent cell |
| metaphase | chromosome line up across the center of the cell. Each chromosome attaches to a spindle fiber at its centromere |
| prophase | chromosomes form, nucleus membrane breaks down |
| Interphase | the stage of the cycle that takes place before cell division occurs; grows in size and produces organelles, a copy of the DNA in the nucleus is made, structures needed for cell division are produced (centrioles and spindle fibers) |
| centromere | where the sister chromatids connect |
| chromosomes | a doubled rod of condensed chromatin, carries DNA that contains genetic information |
| Cell division | DNA - splitting in to two daughter cells. |
| anaphase | the centromeres split, chromatids separate and move away to opposite ends of the cell. the cells stretches out as the opposite ends are pushed apart |
| telophase | two new nuclei form, new nuclear envelopes form around chromosomes, , cytokinesis begins |
| cell cycle | the regular sequence of growth and division that cells undergo. There are three stages interphase, mitosis and cytokinesis. |
| replication | the process by which a cell makes a copy of the DNA and it's nucleus, the DNA molecules unwind and separates, nitrogen bases pair up, because of the way in which the nitrogen bases pair with one another , the order of the bases in each new DNA molecule exactly matches the original |
| mitosis | the stage of the cell cycle during which the cell's nucleus divide into two new nuclei and one copy of the DNA is distributed into each daughter cell |
| Structure of DNA | double helix (twisted ladder) sides are made up of alternating deoxyribose sugar and phosphate molecules, center "rungs" are made up of nitrogen bases, the bases from one side pair up with bases on the other. The adenine molecules pair with thymine and cytosine with guamine |
