Bacteriophages possess

Options

A. ds DNA
B. ds and ss RNA
C. ss DNA
D. All the above.

Answer

**Step-by-Step Text Solution:**

1. **Understanding Bacteriophages**: Bacteriophages, often referred to as phages, are a type of virus that specifically infects bacteria. They are composed of genetic material encased in a protein coat known as a capsid.

2. **Identifying Genetic Material**: The genetic material of bacteriophages is primarily double-stranded DNA (ds DNA). This means that their DNA consists of two strands that are complementary to each other, forming a double helix structure.

3. **Analyzing the Options**:
- **Option 1: ds DNA** - This is correct as it matches the known genetic material of bacteriophages.
- **Option 2: ds and ss RNA** - This is incorrect because bacteriophages do not possess RNA as their genetic material.
- **Option 3: ss DNA** - This is also incorrect since bacteriophages do not have single-stranded DNA.
- **Option 4: All of the above** - This option is incorrect as it includes options that are not true for bacteriophages.

4. **Conclusion**: Based on the analysis, the only correct answer is that bacteriophages possess double-stranded DNA (ds DNA).

**Final Answer**: Bacteriophages possess ds DNA.

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