Question

What is the significance of mitosis and meiosis ?

Answer 1

Mitosis:

1. In cell biology, the cell cycle phase known as mitosis is when replicated chromosomes are divided into two new nuclei.
2. Mitosis, the process of cell division, creates genetically identical cells with a constant number of chromosomes.

Significance of mitosis:

1. It is responsible for the growth and development of multi-cellular organisms ∙
2. Mitosis facilitates the development of a single-cell zygote into a full-grown adult.
3. It is responsible for the growth and development of multi-cellular organisms ∙
4. It helps in repairing damaged or worn-out tissues.
5. The way in which the skin cells that cover a child's body grow and divide is an illustration of mitosis.

Meiosis:

1. In sexually reproducing organisms, meiosis is a unique type of cell division of germ cells that results in the production of gametes, such as sperm or egg cells.
2. Meiosis is responsible for the formation of sex cells or gametes which might be responsible for sexual reproduction.

Significance of meiosis:

1. Meiosis gives rise to four haploid cells from the parent cell.
2. Meiosis is responsible for the formation of sex cells or gametes which might be responsible for sexual reproduction.
3. Due to recombinations in parental characters, variations occur, which are necessary for the evolution process.
4. The number of chromosomes is halved during meiosis; this allows gametes to fuse to form a zygote containing a mixture of paternal and maternal chromosomes.
5. Depending on the species, meiosis can create spores or gametes.