Chromosomes are thread-like structures which is positioned in the nucleus living things and is composed of protein and one molecule of deoxyribonucleic acid (DNA). The DNA is responsible for …show more content…
During this process the genetic material is passed from one cell to another. Mitosis involves a four-stage process; prophase, metaphase, anaphase, and telophase. During the first step, called prophase, the centrioles position themselves at either end of the cell to prepare the cell for the mitotic division. In the metaphase, all of the nuclear membrane dissolves, the DNA lines up in the central axis and the chromosomes align in the middle of the cell. The actual separation of the cell begins in anaphase. Half of the chromosomes move to opposite ends of the cell. The process is complete in telophase. The cell membrane forms again and the cell splits into two separate pieces.