Russian scientist who proposed the theory of origin of life was

Options

A. Oparin
B. Haldane
C. Miler
D. None of these

Answer

**Step-by-Step Text Solution:**

1. **Identify the Question:** The question asks for the name of the Russian scientist who proposed the theory of the origin of life.

2. **Review the Given Options:** The options provided are:
- A) Operin
- B) Haldane
- C) Miller
- D) None of these

3. **Research Each Scientist:**
- **Alexander Ivanovich Operin:** He was a Soviet biochemist known for his work on the origin of life. He published a significant book titled "The Origin of Life" and is recognized for proposing theories regarding how life began.
- **Johan Barden Haldane:** A British scientist known for his contributions to evolutionary biology and statistics in biology. He is not Russian and did not propose a theory of the origin of life.
- **Stanley Lloyd Miller:** An American chemist who conducted experiments related to the origin of life, particularly the Miller-Urey experiment, which demonstrated how organic compounds could be synthesized from inorganic substances. However, he is not Russian.

4. **Determine the Correct Answer:** Based on the information, Alexander Ivanovich Operin is the Russian scientist who proposed the theory of the origin of life.

5. **Final Answer:** The correct answer is **A) Operin.**

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