Which of the following is incorrect about Darwinian variations?

Options

A. Results in gradual evolution
B. small variations
C. directional variations
D. Discontinuous variations

Answer

To determine which statement about Darwinian variations is incorrect, we need to analyze the characteristics of Darwinian variations based on the principles of evolution proposed by Charles Darwin.

### Step-by-Step Solution:

1. **Understanding Darwinian Variation**:
- Darwinian variation refers to the small changes that occur in organisms over time, which contribute to the process of evolution. These variations are essential for natural selection to occur.

2. **Evaluating the Options**:
- **Option 1: Results in gradual evolution**: This is correct. Darwin proposed that evolution occurs gradually through small variations accumulating over time.

- **Option 2: Small variation**: This is also correct. Darwin emphasized that small variations are the building blocks of evolutionary change.

- **Option 3: Directional variation**: This is correct as well. Directional variation refers to changes that occur in response to environmental pressures, leading to the evolution of new species that are better adapted to their environment.

- **Option 4: Discontinuous variation**: This is the incorrect option. Discontinuous variation refers to variations that do not blend and are often influenced by genetic factors, leading to distinct categories (like blood types). Darwinian variation focuses on continuous, small changes rather than these distinct categories.

3. **Conclusion**:
- The statement that is incorrect about Darwinian variations is that it includes discontinuous variation. Darwinian variations are characterized by gradual, small, and directional changes rather than abrupt or categorical changes.

### Final Answer:
The incorrect statement about Darwinian variations is that it includes discontinuous variation.