The term 'chimeric DNA' refers to

Options

A. DNA with overhanging stretches
B. DNA with palindromic sequences
C. a recombiant DNA
D. molecular scissors

Answer

**Step-by-Step Solution:**

1. **Understanding Chimeric DNA**: The term 'chimeric DNA' refers to a type of DNA that is formed by combining segments from two different sources. The word 'chimeric' itself indicates a combination or mixture.

2. **Formation of Chimeric DNA**: Chimeric DNA is created when a gene of interest is extracted from one source of DNA and is then ligated (joined) with a vector DNA. This process allows for the combination of genetic material from different organisms or sources.

3. **Relation to Recombinant DNA**: Chimeric DNA is also referred to as recombinant DNA. This is because the process of combining different DNA segments results in a new DNA molecule that has characteristics from both original sources.

4. **Evaluating Options**: The question provides multiple-choice options regarding the definition of chimeric DNA. We need to analyze each option:
- **Option 1**: DNA with overhanging stretches - Incorrect.
- **Option 2**: DNA with palindromic sequence - Incorrect.
- **Option 3**: Recombinant DNA - Correct, as it aligns with our understanding of chimeric DNA.
- **Option 4**: Molecular scissors - Incorrect, as this refers to restriction endonucleases used in DNA cutting, not the definition of chimeric DNA.

5. **Conclusion**: Based on the analysis, the correct answer is that chimeric DNA refers to recombinant DNA.

**Final Answer**: Chimeric DNA refers to recombinant DNA.

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