Which is incorrect

Options

A. J.B.S Haldane - law of continuity of germplasm
B. Louis pasteur - Germ theory of disease and immunology
C. De vries - Mutation theory
D. Lemaitre - Big bang theory

Answer

To determine which statement is incorrect among the options provided, we will analyze each option systematically.

### Step-by-Step Solution:

1. **Identify the Options**:
- JBS Haldane - Law of continuity of germplasm
- Louis Pasteur - Germ theory of disease and immunology
- Hugo de Vries - Mutation theory
- Georges LeMaitre - Big Bang theory

2. **Analyze Each Option**:
- **JBS Haldane - Law of continuity of germplasm**:
- This statement is incorrect. The law of continuity of germplasm was proposed by August Weismann, not J.B.S. Haldane. Weismann's theory states that germplasm is the hereditary material passed from one generation to the next.

- **Louis Pasteur - Germ theory of disease and immunology**:
- This statement is correct. Louis Pasteur is well-known for his contributions to the germ theory of disease, which states that many diseases are caused by microorganisms.

- **Hugo de Vries - Mutation theory**:
- This statement is correct. Hugo de Vries is credited with the mutation theory, which suggests that mutations are a source of genetic variation in species.

- **Georges LeMaitre - Big Bang theory**:
- This statement is correct. Georges LeMaitre proposed the Big Bang theory, which describes the origin of the universe.

3. **Conclusion**:
- The incorrect statement is the one associated with JBS Haldane regarding the law of continuity of germplasm. The correct attribution of this law is to August Weismann.

### Final Answer:
The incorrect option is: **JBS Haldane - Law of continuity of germplasm**.

---