Genetic species concept was given by

Options

A. Lotsy
B. Lamarck
C. Linnaeus
D. Huxley

Answer

To solve the question "Genetic species concept was given by," we need to analyze the options provided and identify the correct answer based on the contributions of each scientist mentioned.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the scientist who proposed the genetic species concept. This concept relates to how species are defined based on genetic similarities and differences.

2. **Examine the Options**:
- **A. Lotka**: Known for the genetic species concept.
- **B. Lamarck**: Proposed the theory of evolution based on the inheritance of acquired characteristics.
- **C. Linnaeus**: Developed the binomial nomenclature system for naming organisms.
- **D. Huxley**: Coined the term "evolutionary synthesis," integrating genetics with Darwinian evolution.

3. **Identify the Correct Answer**:
- Lotka is credited with the genetic species concept in 1918, which defines a species as a group of genetically identical individuals.
- Lamarck, Linnaeus, and Huxley contributed to other areas of biology but did not propose the genetic species concept.

4. **Conclusion**: Based on the analysis, the correct answer is **A. Lotka**.

### Final Answer:
The genetic species concept was given by **Lotka**.