Which element essential for stability of chromosome structure?

Options

A. Zn
B. Ca
C. Mo
D. Fe

Answer

**Step-by-Step Solution:**

1. **Understanding Chromosome Structure**: Chromosomes are structures within the nucleus of a cell that carry genetic information. They are made up of DNA and proteins, and their stability is crucial for proper genetic function and inheritance.

2. **Identifying Key Elements**: The question asks for an element that is essential for the stability of chromosome structure. The options provided are zinc, calcium, molybdenum, and iron.

3. **Role of Calcium**: Among the options, calcium is known to play a significant role in various biological processes. It is essential for maintaining the structural integrity of chromosomes. Calcium ions help stabilize the structure of DNA and are involved in the formation of chromatin, which is the complex of DNA and proteins in chromosomes.

4. **Conclusion**: After analyzing the options and understanding the role of calcium in chromosome stability, we can conclude that the element essential for the stability of chromosome structure is **calcium**.

**Final Answer**: Calcium

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