In `G_(1)` phase of interphase, the number of chromosomes and amount of DNA in plant cell is 14 and 2C respectively. In `G_(2)` phase the number of chromosomes and amount of DNA respectively is

Options

A. 14 and 2C
B. 14 and 4C
C. 28 and 4C
D. 28 and 2C

Answer

To solve the question regarding the number of chromosomes and the amount of DNA in the G2 phase of interphase, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the G1 Phase**:
- In the G1 phase, the number of chromosomes is given as 14 and the amount of DNA is 2C. This means that each chromosome consists of a single chromatid.

2. **Transition to S Phase**:
- During the S phase (Synthesis phase), DNA replication occurs. This means that the amount of DNA in the cell doubles, but the number of chromosomes remains the same.
- Therefore, after the S phase, the amount of DNA will be 4C (since it doubles from 2C), but the number of chromosomes will still be 14.

3. **Transition to G2 Phase**:
- In the G2 phase, the cell continues to grow and prepares for mitosis. The number of chromosomes remains the same as in the G1 phase, which is 14.
- However, the amount of DNA remains at 4C because it has already doubled during the S phase.

4. **Conclusion**:
- Therefore, in the G2 phase, the number of chromosomes is 14 and the amount of DNA is 4C.

### Final Answer:
- The number of chromosomes in G2 phase is 14 and the amount of DNA is 4C.

### Answer Options:
- A) 14 and 2C
- B) 14 and 4C
- C) 28 and 4C
- D) 28 and 2C

**Correct Option**: B) 14 and 4C

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