Which of the following statement is not correct about evolution?

Options

A. Fossilized animals provide important information to trace evolution
B. Wing of bat and forelimbs of man are homologous
C. In higher animals early development stages are similar
D. Variation among individuals are not important in natural selection

Answer

To determine which statement is not correct about evolution, we will analyze each statement provided in the question.

### Step-by-Step Solution:

1. **Evaluate the First Statement**:
- The first statement claims that fossil animals provide important information to trace evolution.
- **Analysis**: This is true. Fossils are critical evidence of evolutionary history, as they show the remains of organisms that lived in the past and help scientists understand the progression of life forms over time.

2. **Evaluate the Second Statement**:
- The second statement asserts that the wings of bats and the forelimbs of humans are homologous.
- **Analysis**: This is also true. Homologous structures are those that share a common ancestry but may serve different functions. The forelimbs of bats and humans share a similar skeletal structure (humerus, radius, ulna, etc.) but are adapted for different purposes (flying for bats and grasping for humans).

3. **Evaluate the Third Statement**:
- The third statement mentions that in higher animals, early developmental stages are similar.
- **Analysis**: This statement is correct as well. Ernst Haeckel's theory suggests that the embryonic development stages of higher organisms show similarities, reflecting their evolutionary relationships. For example, human embryos exhibit features similar to those of fish and other vertebrates during early development.

4. **Evaluate the Fourth Statement**:
- The fourth statement claims that variations among individuals are not important in natural selection.
- **Analysis**: This statement is incorrect. Variations among individuals are crucial for natural selection. Natural selection operates on the variations present within a population, favoring those individuals that are better adapted to their environment. Without variation, there would be no differential survival or reproduction, which is the essence of natural selection.

### Conclusion:
The statement that is not correct about evolution is the fourth one: "Variation among individuals are not important in natural selection."

### Final Answer:
**Option 4 is the correct answer.**

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