Q:

What occurs in meiosis but not mitosis?

A:

Quick Answer

Meiosis involves two rounds of nuclear division with the daughter cells receiving half the genetic material of the parent, while mitosis involves one. This ensures greater genetic variation.

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Full Answer

Both meiosis and mitosis are methods of cell division, and both methods lead to the distribution of genetic material. However, meiosis involves the creation of four daughter cells, each with half the number of chromosomes as the parent. This differs from mitosis, which creates two daughter cells with identical chromosomes.

The reason for this difference is meiosis ultimately leads to sharing genetic material with cells from another organism. As gametes, or reproductive cells, the genetic material received from this exchange will complete the number of chromosomes required. Without the reduction in chromosome numbers, the offspring will have too many when reproduction occurs.

During division, meiosis creates different combinations of genetic material in each of the daughter cells. When compared to mitosis, gametes produced under meiosis will exhibit a range of variation. This also means the eventual offspring from these gametes will be markedly different from the parent.

Meiosis is important as it introduces genetic variation into a species. However, the process also carries the risk of mistakes - for instance, if the cells fail to divide chromosomes equally. Mitosis runs less risk of errors in division occurring as it involves making a replica of the parent cell. However, lack of genetic variation can leave a species more susceptible to disease.

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Related Questions

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    What is the main purpose of mitosis and meiosis?

    A:

    The main purpose of mitosis is to promote growth and facilitate cell repair while the primary role of meiosis is to produce gametes, which include sperm and eggs. Mitosis and meiosis are both involved in the process of reproduction: these biological functions involve cell division and replication, but perform their tasks in different ways.

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  • Q:

    How do daughter cells compare to the parent cell?

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    Cellular division, or mitosis, produces two daughter cells that are identical to the parent cell. As explained by Clinton Community College, mitosis allows multicellular organisms to grow and repair damaged tissue. Daughter cells are also produced during meiosis, which is a special type of cell division that enables organisms to sexually reproduce. Daughter cells produced in meiosis have one half the number of chromosomes as the parent cell.

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    How do mitosis and meiosis compare and contrast?

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    Mitosis is the division of a cell to create two identical daughter cells, whereas meiosis forms daughter cells that are different than the parent cell. Mitosis is a means of replacing old cells; meiosis forms sex cells, or gametes.

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    What are the main differences between mitosis and meiosis?

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    Though both meiosis and mitosis involve the division of a cell, meiosis generates a cell used for sexual reproduction, while mitosis generates a cell used for growth. Mitosis produces two cells that are identical to the parent cell. Meiosis produces four cells that each contain half the number of chromosomes of the parent cell. Chromosomes are DNA containing genetic information.

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