Science, asked by danish125535, 1 year ago

Explain mitosis for class 10​

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Answered by thampu1997
3

Answer:

Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.

Answered by kavyagill7528148
0

Explanation:

Mitosis, a process of cell duplication, or reproduction, during which one cell gives rise to two genetically identical daughter cells. Strictly applied, the term mitosis is used to describe the duplication and distribution of chromosomes, the structures that carry the genetic information.

mitosis

mitosis

Mitosis has four stages: prophase, metaphase, anaphase, and telophase.

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Mitosis

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The process of cell division by mitosis.

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KEY PEOPLE

Walther Flemming

Daniel Mazia

RELATED TOPICS

Meiosis

Cleavage

Cell division

Endomitosis

A brief treatment of mitosis follows. For a full treatment, see growth: In cells; cell: Mitosis and cytokinesis.

Human chromosomes.

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heredity: During mitosis

When the chromosomes condense during cell division, they have already undergone replication. Each chromosome…

Prior to the onset of mitosis, the chromosomes have replicated and the proteins that will form the mitotic spindle have been synthesized. Mitosis begins at prophase with the thickening and coiling of the chromosomes. The nucleolus, a rounded structure, shrinks and disappears. The end of prophase is marked by the beginning of the organization of a group of fibres to form a spindle and the disintegration of the nuclear membrane.

The chromosomes, each of which is a double structure consisting of duplicate chromatids, line up along the midline of the cell at metaphase. In anaphase each chromatid pair separates into two identical chromosomes that are pulled to opposite ends of the cell by the spindle fibres. During telophase, the chromosomes begin to decondense, the spindle breaks down, and the nuclear membranes and nucleoli re-form. The cytoplasm of the mother cell divides to form two daughter cells, each containing the same number and kind of chromosomes as the mother cell. The stage, or phase, after the completion of mitosis is called interphase.

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Mitosis is absolutely essential to life because it provides new cells for growth and for replacement of worn-out cells. Mitosis may take minutes or hours, depending upon the kind of cells and species of organisms. It is influenced by time of day, temperature, and chemicals.

mitosis: under a microscope

mitosis: under a microscope

Time-lapse photography of a live plant cell nucleus undergoing mitosis.

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This article was most recently revised and updated by Kara Rogers, Senior

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