Mitochondria DNA is

Options

A. Naked
B. Circular
C. Double stranded
D. All the above

Answer

To answer the question "Mitochondria DNA is:", we will analyze the characteristics of mitochondrial DNA step by step.

### Step-by-Step Solution:

1. **Understanding Mitochondria**:
- Mitochondria are double membrane-bound organelles found in eukaryotic cells. They are known as the powerhouse of the cell due to their role in producing ATP through aerobic respiration.

**Hint**: Recall that mitochondria are essential for energy production in cells.

2. **Structure of Mitochondrial DNA**:
- Mitochondrial DNA (mtDNA) is distinct from nuclear DNA. It is important to note its structure:
- **Naked**: Mitochondrial DNA is not associated with histones like nuclear DNA, which means it is considered "naked."
- **Circular**: Unlike the linear structure of nuclear DNA, mitochondrial DNA is circular.
- **Double-stranded**: Mitochondrial DNA consists of two strands, making it double-stranded.

**Hint**: Think about how mitochondrial DNA differs from the DNA found in the nucleus.

3. **Semi-autonomous Nature**:
- Mitochondria are described as semi-autonomous because they contain their own DNA, ribosomes (70S), and can replicate independently of the cell's nuclear DNA.

**Hint**: Remember that the term "semi-autonomous" indicates that mitochondria can perform some functions independently.

4. **Conclusion**:
- Based on the characteristics discussed, mitochondrial DNA is:
- Naked (not associated with proteins)
- Circular (not linear)
- Double-stranded (two strands of DNA)

Therefore, the correct answer to the question is "all of the above."

### Final Answer:
Mitochondrial DNA is naked, circular, double-stranded; hence, the correct option is "all of the above."