During which phase of the cell cycle does DNA synthesis primarily take place?
Solution
Correct Answer: Option C
During the cell cycle, DNA synthesis primarily takes place during the S phase. The cell cycle consists of several phases: G1, S, G2, and M.
- In the G1 phase (Gap 1), the cell grows and prepares for DNA replication but does not yet replicate its DNA.
- The S phase (Synthesis phase) is where DNA replication occurs, resulting in the duplication of chromosomes to ensure each daughter cell receives an identical copy of the genetic material.
- The G2 phase (Gap 2) involves further cell growth and preparation for mitosis, but no DNA synthesis happens here.
- Lastly, the M phase (Mitosis phase) is when the cell divides its duplicated DNA into two daughter cells.
Therefore, the key point is that DNA replication is confined to the S phase, making it crucial for genetic continuity during cell division.
- In the G1 phase (Gap 1), the cell grows and prepares for DNA replication but does not yet replicate its DNA.
- The S phase (Synthesis phase) is where DNA replication occurs, resulting in the duplication of chromosomes to ensure each daughter cell receives an identical copy of the genetic material.
- The G2 phase (Gap 2) involves further cell growth and preparation for mitosis, but no DNA synthesis happens here.
- Lastly, the M phase (Mitosis phase) is when the cell divides its duplicated DNA into two daughter cells.
Therefore, the key point is that DNA replication is confined to the S phase, making it crucial for genetic continuity during cell division.
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