Caulimo (Cauliflower Mosaic) viruses have

Options

A. Double stranded DNA
B. Single stranded DNA
C. Single stranded RNA
D. Double stranded RNA

Answer

**Step-by-Step Solution:**

1. **Identify the Virus**: The question refers to the Cauliflower Mosaic Virus (CaMV), which is part of the Caulimo virus family.

2. **Understand the Composition of CaMV**: CaMV primarily infects plants, particularly those in the Brassicaceae family (which includes cauliflower and other cruciferous vegetables).

3. **Determine the Type of Genetic Material**: The key characteristic of CaMV is its genetic material. It is known to contain circular double-stranded DNA.

4. **Evaluate the Options**:
- **Option 1**: Double stranded DNA - This is correct as CaMV has circular double-stranded DNA.
- **Option 2**: Single stranded DNA - Incorrect, as CaMV does not contain single-stranded DNA.
- **Option 3**: Single stranded RNA - Incorrect, as CaMV does not have single-stranded RNA; this is typical of other viruses like the influenza virus.
- **Option 4**: Double stranded RNA - Incorrect, as this is characteristic of other viruses such as the Rota virus.

5. **Conclusion**: The correct answer is that Cauliflower Mosaic Virus has double stranded DNA.

**Final Answer**: Cauliflower Mosaic Virus has double stranded DNA (Option 1).

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