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Mitosis is the division of the nucleus. Cytokinesis is division of cytoplasm. The two processes complete the cell division.

Mitosis separates two sets of chromosomes evenly. Cytokinesis divides up the cytoplasm into two parts, each with one daughter nucleus and other organelles. The division does not have to be as accurate as mitosis.

2007-10-22 14:26:25 · answer #1 · answered by OKIM IM 7 · 2 0

What Is Cytokinesis In Mitosis

2016-10-22 07:40:37 · answer #2 · answered by ioannidis 4 · 0 0

Mitosis is the process by which a cell duplicates its genetic information (DNA), in order to generate two, identical, daughter cells. It is generally followed immediately by cytokinesis which divides the cytoplasm and cell membrane. This results in two identical daughter cells with a roughly equal distribution of organelles and other cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of the cell cycle, the division of the mother cell into two daughter cells, each with the genetic equivalent of the parent cell.

Mitosis occurs exclusively in eukaryotic cells, but occurs in different ways in different species. For example, animals undergo an "open" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while yeast such as Saccharomyces cerevisiae and fungi such as Aspergillus nidulans undergo a "closed" mitosis, where chromosomes divide within an intact cell nucleus. In multicellular organisms, the somatic cells undergo mitosis, while germ cells — cells destined to become sperm in males or ova in females — divide by a related process called meiosis. Prokaryotic cells, which lack a nucleus, divide by a process called binary fission.

The process of mitosis is complex and highly regulated. The sequence of events is divided into phases, corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase and telophase. During the process of mitosis the pairs of chromosomes condense and attach to fibers that pull the sister chromatids to opposite sides of the cell. The cell then divides in cytokinesis, to produce two identical daughter cells.

Because cytokinesis usually occurs in conjunction with mitosis, "mitosis" is often used interchangeably with "mitotic phase". However, there are many cells where mitosis and cytokinesis occur separately, forming single cells with multiple nuclei. This occurs most notably among the fungi and slime moulds, but is found in various different groups. Even in animals, cytokinesis and mitosis may occur independently, for instance during certain stages of fruit fly embryonic development. Errors in mitosis can either kill a cell through apoptosis or cause mutations that may lead to cancer.

2007-10-22 14:24:29 · answer #3 · answered by Anonymous · 1 1

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