Which of the following scientist conducted an experiment to explain the chemical evolution of life ?

Options

A. Louis Pasteur
B. J.B.S Haldane
C. S.L Miller
D. A. Oparin

Answer

To solve the question of which scientist conducted an experiment to explain the chemical evolution of life, we can follow these steps:

### Step 1: Identify the Scientists and Their Contributions
We need to look at the options provided:
- Lewis Pasteur
- JBS Haldane
- S. L. Miller
- A. Operin

### Step 2: Analyze Each Scientist's Work
1. **Lewis Pasteur**: Known for his work on the germ theory of disease and disproving spontaneous generation, he did not conduct experiments related to the chemical evolution of life.

2. **JBS Haldane**: He proposed theories about the origin of life and the primordial soup but did not conduct a specific experiment to demonstrate chemical evolution.

3. **S. L. Miller**: Conducted the Miller-Urey experiment in 1952, which simulated early Earth conditions and tested the chemical origin of life by creating organic compounds from inorganic precursors.

4. **A. Operin**: He also proposed theories about the origin of life and chemical evolution but did not conduct a specific experiment like Miller.

### Step 3: Conclude the Correct Answer
From the analysis, it is clear that S. L. Miller is the scientist who conducted an experiment specifically aimed at explaining the chemical evolution of life. Therefore, the correct answer is:

**S. L. Miller**

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