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During Gz phase a cell contains double t...

During Gz phase a cell contains double the amount of DNA (4n) present in the original diploid cell.

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**Step-by-Step Solution:** 1. **Understanding the Cell Cycle**: The cell cycle consists of several phases: G1, S, G2, and M. Each phase has specific functions related to cell growth and division. 2. **G1 Phase**: During the G1 phase, the cell grows and duplicates its organelles. At this stage, the DNA content is at its original diploid level, which is represented as 2n (where n is the number of chromosomes). 3. **S Phase**: In the S phase (Synthesis phase), DNA replication occurs. Each chromosome is duplicated, resulting in two copies of each chromosome. Therefore, if the original DNA content was 2n, after the S phase, it becomes 4n. 4. **G2 Phase**: Following the S phase, the cell enters the G2 phase. At this point, the cell continues to grow and prepares for mitosis. The DNA content remains at 4n, as it has already been duplicated during the S phase. 5. **Conclusion**: Since the G2 phase is characterized by the presence of double the amount of DNA (4n) compared to the original diploid cell (2n), the statement "During G2 phase a cell contains double the amount of DNA (4n) present in the original diploid cell" is true. ---
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