In which phase, there is an active synthesis of RNA and proteins and no change in DNA contents of the cell?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Cell Cycle Phases**: The cell cycle consists of several phases: G1, S, G2, and M. Each phase has distinct functions related to cell growth and division.

2. **Identifying the G1 Phase**: The G1 phase (Gap 1) is the first phase of the cell cycle. During this phase, the cell grows and synthesizes various molecules necessary for cell function.

3. **Active Synthesis of RNA and Proteins**: In the G1 phase, there is an active synthesis of RNA and proteins. This is crucial for preparing the cell for DNA replication in the subsequent S phase.

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