The terms cistron, recon and muton were proposed by

Options

A. 1)Bateson
B. 2)J Lederberg
C. 3)S Benzer
D. 4)TH Morgan

Answer

**Step-by-Step Solution:**

1. **Identify the Terms**: The question asks about the terms "cistron," "recon," and "muton."

2. **Recall the Origin**: These terms were proposed by a scientist in the field of genetics.

3. **Determine the Scientist**: The scientist who proposed these terms is S. Benzer. He introduced these concepts in 1955.

4. **Understand the Definitions**:
- **Recon**: A recon is a unit within a gene that may occur between recombination events. However, recombination does not occur within a recon.
- **Muton**: A muton is the smallest unit that can cause a mutation within a gene. It represents the tiniest factor that can lead to a change in the genetic sequence.
- **Cistron**: A cistron is the largest unit of action within a gene. It represents a functional segment of DNA that codes for a specific polypeptide.

5. **Eliminate Incorrect Options**: The options provided were Bateson, J. Lederberg, S. Benzer, and T.H. Morgan. Since we identified S. Benzer as the correct scientist, we can eliminate the other options.

6. **Conclude the Answer**: The correct answer to the question is S. Benzer, who introduced the terms cistron, recon, and muton.

**Final Answer**: The terms cistron, recon, and muton were proposed by S. Benzer.

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