Transcription and translation, both affected by deficiency of :

Options

A. Mg ions
B. K ions
C. Calcium
D. Boron

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks about which mineral deficiency affects both transcription and translation processes in plants.

2. **Define Transcription and Translation**:
- Transcription is the process where DNA is copied into RNA.
- Translation is the process where RNA is used to synthesize proteins.

3. **Identify the Role of Minerals in Plant Nutrition**: Certain minerals are essential for various biochemical processes, including the synthesis of nucleic acids (DNA and RNA) and proteins.

4. **Analyze the Options**:
- **Magnesium**: Essential for the synthesis of DNA and RNA. It acts as a cofactor for many enzymes involved in nucleic acid metabolism.
- **Iron**: Important for chlorophyll synthesis and electron transport, but not directly involved in transcription and translation.
- **Potassium**: Plays a role in osmoregulation and enzyme activation, but does not directly affect transcription and translation.
- **Calcium**: Important for cell wall stability and signaling, but not directly involved in the synthesis of nucleic acids.
- **Boron**: Important for cell division and development, but not directly linked to the processes of transcription and translation.

5. **Conclusion**: Based on the analysis, magnesium is the mineral that directly affects the processes of transcription and translation due to its role in DNA and RNA synthesis.

6. **Final Answer**: The correct answer is **Magnesium**.

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