Who was the first to explain recapitulation theory :

Options

A. Weismann
B. Haeckel
C. Darwin
D. Malthus

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who was the first to explain the recapitulation theory. This theory is significant in the study of evolution and development.

2. **Identifying Key Scientists**: The video mentions several scientists: Wisman, Haeckel, Darwin, and Malthus. We need to determine which of these scientists is associated with the recapitulation theory.

3. **Evaluating Wisman**: The video states that Wisman proposed the theory of germplasm but did not explain the recapitulation theory. Therefore, he is not the correct answer.

4. **Evaluating Haeckel**: The video identifies Haeckel as the scientist who explained the recapitulation theory, also known as the Biogenetic Law. This law states that the development of an embryo (ontogeny) reflects the evolutionary history (phylogeny) of that species.

5. **Evaluating Darwin**: The video mentions Darwin, who is known for his theory of natural selection, but he did not specifically explain the recapitulation theory.

6. **Evaluating Malthus**: Malthus is noted for his work on population growth, which is unrelated to the recapitulation theory.

7. **Conclusion**: Based on the evaluations, the correct answer is that Ernest Haeckel was the first to explain the recapitulation theory.

**Final Answer**: Ernest Haeckel was the first to explain the recapitulation theory.

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