Basic unit of evolution is

Options

A. Species
B. Population
C. Individual
D. Mutation

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the basic unit of evolution. This means we need to identify which level of biological organization is primarily responsible for evolutionary changes.

2. **Options Analysis**: The options provided are:
- Species
- Population
- Individual
- Mutation

3. **Evaluating Each Option**:
- **Species**: While species are important in the context of evolution, they are not the basic unit. A species is a group of similar organisms that can breed and produce fertile offspring.
- **Population**: A population is a group of individuals of the same species living in a specific area. It is at this level that evolutionary processes, such as natural selection, occur.
- **Individual**: An individual organism does not evolve; rather, it is the population that evolves over time through changes in the genetic makeup of its members.
- **Mutation**: Mutations are changes in the DNA sequence and can contribute to genetic variation, but they are not a unit of evolution themselves.

4. **Conclusion**: The basic unit of evolution is the **population**. Evolution occurs as changes in allele frequencies within a population over time, influenced by natural selection, genetic drift, and other mechanisms.

5. **Final Answer**: The basic unit of evolution is **Population**.

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