Question

Write about changes in the chromosome number during cell division.

Answer 1

Cell division:

1. It is the process used by cells to produce genetically identical copies of themselves.
2. Cell division is of two major types i.e mitosis and meiosis.

Mitosis:

1. It is a type of cell division where the number of chromosomes remains identical even after the cell division.
2. It occurs in the somatic cells of the body.
3. For example: If the parent cell has 46 number of chromosomes, then the two cells formed after division will also have 46 chromosomes each.

Meiosis:

1. It is a type of cell division where the number of chromosomes become half after the cell division.
2. It occurs in the germ cells of the body.
3. For example: If the parent cell has 46 number of chromosomes, then the two cells formed after division will have 23 chromosomes each.