Evolution of heart from one to two, three and four chambered proves

Options

A. Biogenesis law of Haeckel
B. Lamarckism
C. Hardy weinberg's law
D. Neo Darwinism

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the evolutionary progression of the heart from one chamber to two, three, and four chambers, and what this evolution proves.

2. **Identifying Key Concepts**: The evolution of the heart is a significant aspect of vertebrate evolution. The number of chambers in the heart is related to the complexity of the organism and its circulatory needs.

3. **Reviewing the Options**: The options provided are:
- A) Biogenesis of vehicles
- B) Lamarckism
- C) Hardy-Weinberg Law
- D) Neo-Darwinism

4. **Analyzing Each Option**:
- **Biogenesis of vehicles**: This option does not relate to biological evolution or the heart.
- **Lamarckism**: This theory focuses on the inheritance of acquired characteristics, which does not directly explain the evolution of the heart.
- **Hardy-Weinberg Law**: This law pertains to population genetics and does not address the evolution of anatomical structures.
- **Neo-Darwinism**: While this theory incorporates Darwin's ideas with modern genetics, it does not specifically address the developmental stages of the heart.

5. **Identifying the Correct Answer**: The correct answer is the **biogenetic law** proposed by Ernst Haeckel. This law suggests that the development stages of an embryo reflect the evolutionary history of the species, which is relevant to the evolution of the heart.

6. **Conclusion**: The evolution of the heart from one to two, three, and four chambers demonstrates the principle that the embryonic development of organisms reflects their evolutionary lineage, supporting the biogenetic law.

### Final Answer:
The evolution of the heart from one to two, three, and four chambers proves the biogenetic law proposed by Ernst Haeckel, which states that the development stages of embryos reflect their evolutionary history.