Two key events take place, during S-phase in animal cells, DNA replication and duplication of centriole. In which parts of the cell these events occur ?

Explanation

To answer the question regarding the two key events that occur during the S-phase in animal cells, we will break down the process step by step.

### Step-by-Step Solution:

1. **Understanding the S-phase**:
- The S-phase, or synthesis phase, is part of the cell cycle where the cell prepares for division. It is the phase where DNA replication and centriole duplication occur.

2. **Identifying Key Events**:
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