What would be the DNA content in the cell at `G_(1), G_(2)`, anaphase stage, when the content after mitotic phase is 40 Pg?

Options

A. `G_(1) = 40 Pg, G_(2) = 80 Pg`, Anaphase = 40 Pg.
B. `G_(1) = 40 Pg, G_(2) = 80 Pg`, Anaphase = 80 Pg.
C. `G_(1) = 80 Pg, G_(2) = 40 Pg`, Anaphase = 40 Pg.
D. `G_(1)=80,G_(2)=40Pg,` Anaphase=80Pg`

Answer

To determine the DNA content in the cell at different stages of the cell cycle (G1, G2, and anaphase) when the DNA content after the mitotic phase is 40 Pg, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the M Phase**:
- After the completion of mitosis (M phase), the total DNA content in the cell is given as 40 Pg.

2. **Identifying the S Phase**:
- During the S phase (synthesis phase), the DNA content doubles because DNA replication occurs. Therefore, if the DNA content after mitosis is 40 Pg, then before mitosis (at the end of the S phase), the DNA content must have been 80 Pg.

3. **Determining G2 Phase**:
- The G2 phase occurs after the S phase and before mitosis. The DNA content remains the same as it was at the end of the S phase, which is 80 Pg.

4. **Finding G1 Phase**:
- The G1 phase is the phase before the S phase. At this stage, the DNA content is half of what it is at the end of the S phase. Therefore, if the DNA content at the end of the S phase is 80 Pg, the DNA content at G1 phase is 40 Pg.

5. **Analyzing Anaphase**:
- During anaphase, the DNA content is still the same as it was at the end of the S phase (before cytokinesis occurs). Thus, the DNA content during anaphase is also 80 Pg.

### Summary of DNA Content:
- **G1 Phase**: 40 Pg
- **G2 Phase**: 80 Pg
- **Anaphase**: 80 Pg

### Final Answer:
- G1 = 40 Pg, G2 = 80 Pg, Anaphase = 80 Pg