Classification of organisms based on evolutionary as well as gentic relationships is called

Options

A. Biosystematics
B. Phenetics
C. Cladistics
D. Numerical Taxonomy.

Answer

To answer the question "Classification of organisms based on evolutionary as well as genetic relationships is called", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking for a specific term that describes the classification of organisms by considering both their evolutionary history and genetic relationships.

2. **Review the Options**: The options provided are:
- A) Biosystematics
- B) Phenetics
- C) Cladistics
- D) Numerical Taxonomy

3. **Analyze Each Option**:
- **Biosystematics**: This method involves classifying organisms based on their evolutionary relationships but does not specifically emphasize genetic relationships. Therefore, it is not the correct answer.

- **Phenetics**: This classification focuses on the overall similarities among organisms, which can include morphological or anatomical traits, but it does not consider evolutionary relationships in depth. Hence, this is also not the correct answer.

- **Cladistics**: This approach reconstructs evolutionary relationships based on shared derived characteristics and genetic information. It specifically emphasizes both evolutionary and genetic relationships, making it a strong candidate for the correct answer.

- **Numerical Taxonomy**: This method uses numerical techniques to classify organisms based on various traits but does not inherently focus on evolutionary or genetic relationships. Thus, it is not the correct answer.

4. **Identify the Correct Answer**: After analyzing all the options, the correct term that describes the classification of organisms based on both evolutionary and genetic relationships is **Cladistics**.

### Final Answer:
The classification of organisms based on evolutionary as well as genetic relationships is called **Cladistics**.

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