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In bacteria this structure confers resis...

In bacteria this structure confers resistance to antibiotics

A

Circular DNA

B

Plasmid DNA

C

Genomic DNA

D

Linear DNA

Text Solution

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**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks which structure in bacteria confers resistance to antibiotics. This requires knowledge of bacterial genetics and the structures involved in antibiotic resistance. 2. **Analyzing the Options**: - **Option 1: Circular DNA**: This refers to the DNA structure found in many bacteria, which is typically a closed loop. However, circular DNA itself does not confer antibiotic resistance. - **Option 2: Plasmid DNA**: Plasmids are small, circular, extrachromosomal DNA molecules that can carry genes, including those that provide resistance to antibiotics. This is a strong candidate for the correct answer. - **Option 3: Genomic DNA**: This is the main chromosomal DNA of an organism, containing the bulk of genetic information. It does not specifically confer antibiotic resistance. - **Option 4: Linear DNA**: This type of DNA has two ends and is not typically found in bacteria. It does not confer antibiotic resistance. 3. **Identifying the Correct Answer**: Based on the analysis, plasmid DNA (Option 2) is the structure that confers antibiotic resistance in bacteria. 4. **Conclusion**: The correct answer to the question is **Option 2: Plasmid DNA**. ---
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