Answer:
Mitosis occurs during the development of multicellular organisms when growth and repair are needed. In the stages that require growth as a zygote, embryo, and infant, mitosis occurs rapidly. After fertilization, the development of multicellular organisms proceeds by a series of mitosis. Each formed cell receives chromosomes that are alike in composition and equal in number to the chromosomes of the parent cell. Therefore, mitosis plays a crucial role in the development and growth of multicellular organisms.
Step-by-step explanation: