Mitosis Stages and DNA Content

Steps:

• Statement 1 correct: Cell T shows chromosomes aligned at equator, defining metaphase.
• Statement 2 incorrect: DNA replication occurs only in S phase of interphase, not mitotic cell R (likely prophase).
• Statement 3 correct: Cells S and R in G1-like or early stages have 2C DNA; cell T in metaphase has 4C after replication.
• Statement 4 correct: Sequence S (interphase/prophase), R, to T (metaphase), then P (anaphase), Q (telophase) follows mitotic order.

Why C is correct:

• C selects 1, 3, and 4, aligning with mitosis progression where DNA doubles post-interphase and stages advance sequentially.

Why the others are wrong:

• A includes 2, but replication is interphase-specific, not mitotic.
• B omits 3 and 4, ignoring DNA increase and stage sequence.
• D includes 2 and excludes 1, missing metaphase identification.

Final answer: C