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Cell Division : Mitosis and Meiosis - Coggle Diagram
Cell Division : Mitosis and Meiosis
Cell division is the process in which a parent cell divides, giving rise to two or more daughter cells. It is an essential biological process in many organisms. It is the means used by multicellular organisms in order to grow, replenish (repair), and reproduce.
Meisosis
meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell. Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilisation would result in offspring with twice the normal number of chromosomes!
Chromatids are shorter and thick
In contrast, the indirect cell division involves complicated changes within the cell, e.g. formation of chromosomes, before the parent cell divides and produce daughter cells. Mitosis is a cell division that involves an indirect method of producing daughter cells.
Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell.
Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.
Unlike mitosis, meiosis involves two rounds of nuclear division, not just one.
Mitosis consists of one nuclear division
One cell cycle results in production of two daughter cells in mitosis
In mitosis the chromosome number of daughter cells is the same as that of mother cell
In meiosis daughter cells are different from mother cell in chromosome number and composition
Meiosis occurs in reproductive cells
In mitosis daughter cells are identical with mother cell in structure and chromosome composition
Chromatids are long and thin
Mitosis occurs in somatic tissues
Similarities
Mitosis and Meiosis both occur in the nucleus of the cell and are observable under the light microscope
Both the process involves the division of the cell.
There is no involvement of the cells of the cardiac muscles tissue and the nervous tissue in the process of Mitosis and Meiosis as they once formed, do not undergo further any division.
Synthesis of DNA occurs in both the cycles.