Question

By what mechanism does a diploid animal grow after fertilization?

Answer 1

Ans. Mitosis.

Mitosis is a process of cell division, which involves formation of two daughter cells from a parent cell having same genetic constitution as present in parent cell. It plays role in growth, development, and repairing of damage tissue.

After fertilization, a diploid, single-celled zygote is formed, which goes for mitosis, make thousands of cells and develops into fetus, which later develops into an adult animal.

Thus, the mechanism by which a diploid animal grows after fertilization is 'mitosis.'

Answer 2

Mitosis
Definition of Mitosis: The process where a single cell divides resulting in generally two identical cells, each containing the same number of chromosomes and genetic content as that of the original cell.