Recombinant DNA or r DNA technology was discovered by

Options

A. (a) Watson and Crick
B. (b) Sutton and Boveri
C. (c) Cohen and Boyer
D. (d) Bateson and de Vries

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the discovery of recombinant DNA (rDNA) technology and who was responsible for it.

2. **Defining rDNA Technology**: Recombinant DNA technology involves combining DNA from different sources to create a new genetic combination. This technology allows scientists to manipulate genes and design artificial DNA according to specific needs.

3. **Identifying Key Scientists**: The first recombinant DNA was constructed by a pair of scientists. It is essential to identify who these scientists are.

4. **Recognizing the Correct Pair**: The scientists who are credited with the discovery of rDNA technology are Herbert Boyer and Stanley Cohen. They constructed the first recombinant DNA in 1973.

5. **Understanding Their Contribution**: Boyer and Cohen used an antibiotic resistance gene from E. coli and transferred it to the plasmid of Salmonella typhi. They utilized restriction enzymes and DNA ligase to create this modified plasmid.

6. **Eliminating Incorrect Options**:
- Watson and Crick are known for discovering the structure of DNA, not rDNA technology.
- Sutton and Boveri contributed to the chromosomal theory, which is unrelated to rDNA.
- Bateson and Leibovitz did not collaborate on significant discoveries in this field.

7. **Final Answer**: The correct answer to the question is C. Cohen and Boyer.

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