1. Mitosis: This process is responsible for the growth and repair of multicellular organisms. It produces two identical daughter cells from a single parent cell. DNA replication ensures that each daughter cell receives a complete and identical copy of the parent cell's genetic material.

2. Meiosis: This process is responsible for the production of gametes (sperm and egg cells) for sexual reproduction. Meiosis involves two rounds of cell division, resulting in four daughter cells, each with half the number of chromosomes as the parent cell. DNA replication is crucial in meiosis to provide each daughter cell with the correct number of chromosomes for proper sexual reproduction.