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r-DNA technology allowed the production ...

r-DNA technology allowed the production of antigenic polypeptides of pathogen in

A

bacteria

B

virus

C

yeast

D

1 and 3

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding r-DNA Technology**: r-DNA technology, or recombinant DNA technology, involves combining DNA from different sources. This technique allows scientists to manipulate genetic material to produce specific proteins. 2. **Production of Antigenic Polypeptides**: Antigenic polypeptides are proteins that can provoke an immune response. They are derived from pathogens, which are microorganisms that can cause disease. 3. **Sources of Antigenic Polypeptides**: The question mentions that r-DNA technology allows the production of these polypeptides from pathogens. Common sources for producing these proteins using r-DNA technology include bacteria and fungi. 4. **Identifying the Correct Options**: The question states that r-DNA technology allows for the production of antigenic polypeptides of pathogens in specific organisms. Based on the information provided, the correct options are: - Option 1: Bacteria - Option 3: Fungi 5. **Final Answer**: Therefore, the answer to the question is that r-DNA technology allows the production of antigenic polypeptides of pathogens in both bacteria and fungi, which corresponds to option D (1 and 3). ---
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