The genetic material of a viroid is

Options

A. DNA
B. RNA
C. Protein
D. Carbohydrate

Answer

**Step-by-Step Solution:**

1. **Understanding Viroids**: Viroids are infectious agents that are significantly smaller than viruses. They were first discovered by D.O. Diner in 1972.

2. **Composition of Viroids**: Unlike viruses, which typically have a protein coat surrounding their genetic material, viroids do not have a protein coat. This is a key distinguishing feature.

3. **Genetic Material**: The genetic material of viroids is exclusively RNA. This RNA is of low molecular weight, contributing to the small size of viroids.

4. **Association with Diseases**: Viroids are known to cause various plant diseases, such as the potato spindle tuber disease. They do not cause diseases in animals.

5. **Conclusion**: Based on the information gathered, the genetic material of a viroid is RNA.

**Final Answer**: The genetic material of a viroid is RNA.

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