Question

Why do cells undergo mitosis and meiosis?

Answer 1

Mitosis leads to the formation of two cells identical to the mother cell and to each other, while meiosis leads to the formation of for cells having half the number of chromosomes of the mother cell.

Explanation:

Mitosis is used to grow new tissues an repair the wounded ones.
Meiosis is used to produce gametes which eventually fuse together to make zygote that will develop into a new individual.