Which initiated study in population genetics

Options

A. Hardy - Weinberg law
B. Lamarckism
C. Darwinism
D. Palaeontology

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which concept initiated the study in population genetics.

2. **Identifying the Options**: The options provided are:
- Hardy-Weinberg law
- Marxism
- Darwinism
- Paleontology

3. **Analyzing Each Option**:
- **Hardy-Weinberg Law**: This law describes how allele frequencies in a population remain constant from generation to generation in the absence of evolutionary influences. It is fundamental to population genetics.
- **Marxism**: This is a socio-economic theory and does not relate to genetics.
- **Darwinism**: While it pertains to natural selection and evolution, it does not specifically focus on population genetics.
- **Paleontology**: This is the study of ancient life and fossils, which is not directly related to population genetics.

4. **Conclusion**: The Hardy-Weinberg law is the correct answer as it laid the foundation for the study of population genetics by establishing the conditions under which allele frequencies remain stable.

5. **Final Answer**: The correct option is **Hardy-Weinberg law**.