Ans.
Cell division includes two phases, interphase and M (mitotic) phase. During interphase, cell prepares itself for division, while actual division takes place in M phase.
S phase (synthesis phase) of interphase involves a process, known as DNA replication, during which cell makes exact copies of DNA molecules (known as daughter DNA molecules) from parent DNA molecules present inside the cell nucleus.
During M phase, the daughter DNA molecules are divided into two daughter cells equally that result in formation of new cells with same genetic composition as present in parent cell.
Thus, the correct answer is 'replication.'
