Answer:
Living things need both meiosis and mitosis to function.
In order for the body to grow, mitosis takes place. Mitosis is what causes us to grow from the size of a baby to the size of an adult. The cell creates a copy of itself during mitosis, enabling the organism to grow larger through repeated mitotic divisions. In order to replace damaged or dead cells, mitosis also takes place. Without mitosis, cells cannot be repaired or grown.
Step-by-step explanation:
Gametes are created during meiosis. Four genetically distinct haploid gametes (eggs or sperm) are created during one round of meiosis. Without meiosis, gametes wouldn't develop and humans wouldn't be able to procreate.