If the initial amount of DNA is denoted as 2C then it increases to _____ in S-phase:-

Answer

To solve the question regarding the increase of DNA amount during the S-phase of the cell cycle, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Initial Amount of DNA**: The problem states that the initial amount of DNA is denoted as 2C. Here, "C" refers to the basic unit of DNA content in a cell.

2. **Identify the S-phase Function**: The S-phase of the cell cycle is known as the synthesis phase. This phase is specifically characterized by the replication of DNA.

3. **Explain DNA Replication**: During the S-phase, the DNA in the cell undergoes replication. This means that each strand of DNA is copied, resulting in a doubling of the total amount of DNA present in the cell.

4. **Calculate the Final Amount of DNA**: Since the initial amount of DNA is 2C and it doubles during the S-phase, we can calculate the final amount of DNA after replication:
- Initial amount = 2C
- After replication (doubling) = 2C × 2 = 4C

5. **Conclusion**: Therefore, the amount of DNA after the S-phase will be 4C.

### Final Answer:
The amount of DNA increases to **4C** in the S-phase.

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