In ……………………… every DNA replication of chromosome duplication is followed by two nuclear divisions.

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which process involves every DNA replication of chromosome duplication being followed by two nuclear divisions.

2. **Identifying the Process**: The process that fits this description is meiosis. Meiosis is a type of cell division that reduces the chromosome number by half and results in the formation of gametes (sperm and eggs).

3. **Details of Meiosis**:
- Meiosis consists of two sequential nuclear divisions: Meiosis I and Meiosis II.
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