Embryological support for evolution was proposed by:

Options

A. Ernst Heckel
B. Karl Ernst von Baer
C. Charles Darwin
D. Alfred Wallace

Answer

To answer the question "Embryological support for evolution was proposed by:", we will follow these steps:

### Step 1: Identify the Scientists Mentioned
The question provides a list of scientists:
- Ernest Haeckel
- Karl Ernst von Baer
- Charles Darwin
- Alfred Wellens

### Step 2: Understand the Contributions of Each Scientist
- **Ernest Haeckel**: Proposed the Biogenetic Law (also known as the Recapitulation Theory) in the 1860s, which suggests that the development stages of embryos (ontogeny) reflect the adult forms of their evolutionary ancestors (phylogeny).
- **Karl Ernst von Baer**: Known for his work in embryology, but he did not specifically propose the theory of embryological support for evolution.
- **Charles Darwin**: Known for the theory of natural selection, but he did not specifically focus on embryological development in his evolutionary theory.
- **Alfred Wellens**: Not widely recognized in the context of embryological support for evolution.

### Step 3: Focus on Haeckel's Contribution
Ernest Haeckel's Biogenetic Law states that the embryonic development of an organism follows the same progression as the evolutionary history of that organism's species. This means that during its development, an embryo will exhibit characteristics of its ancestors.

### Step 4: Conclusion
Based on the contributions of the scientists, the correct answer to the question is **Ernest Haeckel**.

### Final Answer
Embryological support for evolution was proposed by **Ernest Haeckel**.

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