Which type of cell division is required for growth and repair of body and which type is involved in formation of gametes?
Solution and Explanation
Cell division: It is the process of formation of two daughter cells from a single cell following a series of steps.
Mitosis:
1. It is also known as equational division because it forms exactly a xerox copy of the previous cell.
2. The DNA amount remains constant and also the chromosome number remains constant in a species.
3. This is the cell division required for growth and repair of the body as it adds up identical cells to a certain part of the body increasing its size.
4. In case of injuries where the cells are damaged, mitosis occurs to repair those regions.
Meiosis:
1. It is known as the reductional division as the chromosome number reduces to half in this type of division.
2. It can form gametes as gametes need to be haploid cells so that they can fuse together in order to form a diploid zygote which will give rise to a new offspring.
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Concepts Used:
Cell Cycle and Cell Division
Cell Cycle:
The sequence of events by which a cell copies itself synthesizes other constituents of the cell and eventually splits into two daughter cells is termed the cell cycle. The cell synthesizes all its constituents in a sequential pattern to make sure the proper division and distribution of components that occurs between the two daughter cells. Therefore, we can say that the cell cycle is the period of time between the development of new daughter cells and their further division.
Stages of Cell Cycle:
The cell cycle can be sub-divided into an additional category of Interphase. Meanwhile, the Interphase can be branched into 3 further stages, such as:
- G1 Phase - “Gap 1 Phase”
- S Phase - "Synthesis Phase"
- G2 Phase - "Gap 2 Phase"
Read More: Cell Cycle and Cell Division
Cell Division:
The division of the parent cells into two or more cells is called daughter cell, cell division takes place. In general, it occurs as a part of a larger cell cycle. All the cell reproduces by dividing into two, wherein each parental cell produces two daughter cells.
Stages of Cell Division:
Cell division can be widely divided into several sub-segments that result from Mitosis and Meiosis.
- Mitosis or (M Phase)
- Meiosis