Replication of cells includes:
Mitosis: Results in two identical daughter cells for growth and repair.
Meiosis: Produces gametes with half the genetic material for reproduction.
DNA replication: A prerequisite for both mitosis and meiosis, ensuring genetic continuity.
Each process has unique functions but is essential for cellular replication and organismal survival.
Final Answer:
\[
\boxed{\text{All of the above}}
\]