You are watching: Why is prophase the longest phase of mitosis

Divide and Split

Can friend guess what this vibrant image represents? It reflects a eukaryotic bio cell during the procedure of cell division. In particular, the image shows the cell core of the cell dividing. In eukaryotic cells, the cell nucleus divides before the cell itself splits in two; and before the cell nucleus divides, the cell’s DNA is replicated, or copied. There should be two copies of the DNA so that each daughter cell will have actually a finish copy of the genetic material native the parental cell. Exactly how is the replicated DNA sorted and also separated so the each daughter cell gets a complete set of genetic material? to answer the question, you an initial need come know more about DNA and the forms it takes.

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Figure \(\PageIndex3\): Mitosis is the phase of the eukaryotic bio cell cycle that occurs in between DNA replication and the development of two daughter cells. Mitosis has 4 substages, prophase, metaphase, anaphase, and telophase.


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Prophase

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api/deki/files/18045/1024px-Mitotic_Metaphase.svg.png?revision=1&size=bestfit&width=291&height=244" />Figure \(\PageIndex5\): Chromosomes, consist of of sister chromatids, heat up in ~ the equator or middle of the cell during metaphase. The blue lines space spindles, and the orange rectangles at the cabinet poles space centrioles. Part spindles native the the opposite centrioles attach with every other, and some spindles attach to the kinetochores that the sister chromosomes indigenous their corresponding sides. Each chromosome is attached to 2 spindles.

Anaphase

During anaphase, sister chromatids separate and also the centromeres divide. The sisters chromatids are pulled apart by the shortening of the spindle fibers. This is a tiny like reeling in a fish through shortening the fishing line. One sister chromatid moves to one pole that the cell, and also the other sister chromatid move to opposing pole (see figure \(\PageIndex6\)). In ~ the finish of anaphase, every pole the the cell has actually a complete set of chromosomes