Darwinian Variations are -

Options

A. Non-directional
B. Small
C. Directional
D. Both b and c

Answer

**Step-by-Step Solution:**

1. **Understanding Darwinian Variations**: Darwinian variations refer to the small, incremental changes in traits that occur within a species over generations. These variations are crucial for the process of natural selection.

2. **Characteristics of Darwinian Variations**:
- **Small Variations**: Darwin emphasized that these variations are typically small and not drastic. They can be slight changes in physical traits, behaviors, or physiological processes.
- **Directional Changes**: These variations tend to occur in a specific direction, meaning that they can lead to adaptations that enhance survival and reproduction in a given environment.

3. **Importance in Evolution**: The small and directional nature of these variations allows populations to gradually adapt to their environments over time. This is a fundamental concept in Darwin's theory of evolution by natural selection.

4. **Conclusion**: Based on the characteristics described, Darwinian variations are defined as small and directional changes in traits that contribute to the evolutionary process.

**Final Answer**: Darwinian variations are small and directional variations that occur within a species, which play a critical role in the process of evolution.

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