Q:

What are the differences between mitosis and meiosis?

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Quick Answer

The two main differences in mitosis and meiosis are that meiosis involves only one cell division, not two, and meiosis results in the production of germ cells or cells that produce gametes. In mitosis, one round yields two genetically identical cells.

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Full Answer

Mitosis is a continuous process that is divided into four phases including prophase, metaphase, anaphase and telophase. These four phases along with interphase are referred to as the cell cycle. Prophase is the first stage when chromosomes shorten and become visible under a microscope. The spindle fibers move the replicated chromosomes to the middle of the cell during metaphase, and during anaphase the sister chromatids separate and move towards opposite poles of the cell. The last stage is telophase, when cytokinesis occurs.

Meiosis consists of two nuclear divisions, which is needed for asexual reproduction. The division results in haploid cells called gametes, which is referred to as reduction division because the number of chromosomes is reduced by half.

All living things are made of preexisting cells, but before mitosis or meiosis can take place, the cell must duplicate its chromosomes and produce everything needed for cell division. This is accomplished during interphase, which is divided into the G1 phase, S phase and finally the G2 phase. Once a cell has gone through interphase, it will then undergo mitosis or meiosis.

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Related Questions

  • Q:

    What type of cell division produces gametes?

    A:

    Meiosis is the type of cell division that produces gametes, the reproductive cells of a sexually reproducing organism. During meiosis, the genetic material replicates and is divided between daughter cells so that each gamete contains a single copy of each chromosome instead of two copies.

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  • Q:

    Why is meiosis important in humans?

    A:

    Arizona State University states that meiosis is how sexually reproducing organisms, including humans, produce gametes, or sex cells. Gametes are fundamentally different from the body, or somatic, cells of sexually reproductive organisms because gametes only have half of the genetic code in their nucleus. When two different gametes fuse and produce a zygote, their half-complements of genetic material combine to form a complete genome with the full complement of chromosomes.

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    What is the end product of meiosis?

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    The end products of meiosis are gametes, which are cells with half the chromosome amount of normal cells. These genes are the same as ones found in the parent cells, but they have a different arrangement because they have been recombined.

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  • Q:

    How do I describe the process of meiosis?

    A:

    The process of meiosis is a form of cell division that produces reproductive cells, also known as gametes. This process involves two successive cell divisions that produce half the number chromosomes in the new cells.

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