The interphase lasts more than what percent of the duration of cell-cycle?

Options

A. `95%`
B. `85%`
C. `70%`
D. `60%`

Answer

**Step-by-Step Solution:**

1. **Understanding the Cell Cycle**: The cell cycle is a series of events that a cell goes through as it grows and divides. It consists of two main phases: Interphase and M phase (mitotic phase).

2. **Defining Interphase**: Interphase is the preparatory phase where the cell prepares for division. It is further divided into three sub-phases:
- **G1 Phase**: The cell grows and synthesizes proteins.
- **S Phase**: DNA replication occurs, and chromosomes are duplicated.
- **G2 Phase**: The cell continues to grow and prepares for mitosis.

3. **Understanding M Phase**: The M phase is where actual cell division occurs, which can be either mitosis or meiosis. This phase is much shorter compared to interphase.

4. **Duration of Interphase**: It is known that interphase lasts for a significant portion of the cell cycle. Specifically, it lasts for about 95% of the total duration of the cell cycle.

5. **Calculating the Duration**: If we consider the total duration of the cell cycle as 24 hours, then:
- Interphase duration = 95% of 24 hours = 0.95 * 24 = 22.8 hours.
- M phase duration = 5% of 24 hours = 0.05 * 24 = 1.2 hours.

6. **Conclusion**: Therefore, interphase lasts for more than 95% of the duration of the cell cycle.

**Final Answer**: The interphase lasts more than 95% of the duration of the cell cycle.

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