During interphase, RNA and proteins are synthesized in

Options

A. S-phase
B. `G_(1)`-phase
C. `G_(2)`-phase
D. Both B and C.

Answer

**Step-by-Step Solution:**

1. **Understanding Interphase**: Interphase is the longest phase of the cell cycle and is divided into three sub-phases: G1 phase, S phase, and G2 phase.

2. **Identifying the Phases**:
- **G1 Phase**: This is the first growth phase where the cell grows and synthesizes various molecules.
- **S Phase**: This is the synthesis phase where DNA replication occurs.
- **G2 Phase**: This is the second growth phase where the cell prepares for mitosis.

3. **Synthesis of RNA and Proteins**:
- In the **G1 Phase**, the cell synthesizes RNA, enzymes, proteins, and amino acids, which are essential for the formation of histone proteins.
- In the **G2 Phase**, there is also significant synthesis of RNA and proteins, particularly tubulin proteins, which are important for the formation of the mitotic spindle during cell division.

4. **Conclusion**: RNA and proteins are synthesized during both the G1 and G2 phases of interphase. Therefore, the correct answer to the question is that RNA and proteins are synthesized in both G1 and G2 phases.

**Final Answer**: During interphase, RNA and proteins are synthesized in the G1 phase and G2 phase.

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