Question

during the cell cycle,
oa. dna is replicated directly after the completion of mitosis.
ob. dna is replicated during mitosis.
oc. dna is replicated before mitosis begins.
od. dna is replicated once before mitosis and again before cytokinesis.

Explanation:

The cell cycle consists of interphase (where DNA replication occurs in the S - phase) and mitosis. DNA replication happens during interphase (S - phase) which is before mitosis begins.

• Option A: DNA replication occurs in interphase (S - phase) not after mitosis.
• Option B: DNA replication is not during mitosis. Mitosis is for cell division of the nucleus.
• Option C: Correct as DNA replication (in S - phase of interphase) occurs before mitosis.
• Option D: DNA is replicated only once per cell cycle (in S - phase of interphase), not again before cytokinesis.

Answer:

C. DNA is replicated before mitosis begins.