During which phase of cell division does the replication of nuclear DNA take place?

💡 Solution & Explanation

The synthesis phase or S phase of the cell cycle is the specific stage during interphase where DNA molecules replicate to ensure identical genetic material distribution into daughter cells. During this period, cellular content is duplicated alongside chromosomal replication before entering the G2 phase. Errors during this replication window can lead to mutations or cell cycle arrest regulated by checkpoint proteins.