Which statement best describes DNA replication?

• A. The nucleus dissolves
• B. Sister chromatids separate
• C. DNA is replicated to produce two identical copies of each chromosome
• D. Cytokinesis occurs

Answer: (C)

DNA replication is the process that copies the genome before cell division, so each chromosome ends up with two identical copies known as sister chromatids. This happens during the S phase of interphase and sets the stage for equal genetic material to be distributed to the daughter cells when the chromatids separate later in mitosis or meiosis. The other events mentioned—nucleus dissolution, chromatids separating, and cytokinesis—occur at later steps of cell division and do not describe replication itself. Therefore, describing replication as producing two identical copies of each chromosome best captures what this process achieves.