Final answer:
DNA replication occurs during the S phase of interphase in the eukaryotic cell cycle. Interphase, comprising G1, S, and G2 phases, involves cell growth, DNA synthesis in the S phase, and further preparation for division in G2. This sequence is essential for cellular proliferation and genetic fidelity.
Step-by-step explanation:
DNA replication, a crucial process for genetic continuity, transpires during the S phase (synthesis phase) of interphase within the eukaryotic cell cycle. Interphase is a substantial period encompassing G1, S, and G2 phases. In the G1 phase, the cell experiences growth and readies for DNA synthesis. The subsequent S phase is exclusively devoted to DNA replication, ensuring the accurate duplication of each chromosome. This meticulous process lays the foundation for genetic integrity. Following DNA replication, the cell enters the G2 phase, focusing on additional growth and preparation for cell division. Altogether, interphase is a dynamic stage where the cell undergoes growth, DNA replication, and further preparation for division, constituting a vital continuum in the eukaryotic cell cycle essential for cellular proliferation and maintenance of genetic fidelity.