Classical systematics believes in

Options

A. Cytological studies
B. Fixity of species
C. Dynamic nature of species
D. Genetic studies

Answer

**Step-by-Step Solution:**

1. **Understanding Classical Systematics**: Classical systematics is a branch of biological classification that primarily focuses on the morphological characteristics of organisms, such as shape, size, and color.

2. **Key Concept - Fixity of Species**: One of the fundamental beliefs of classical systematics is the fixity of species. This means that species are considered to be static and unchanging over time.

3. **Analyzing the Options**:
- **Cytological Studies**: This option is incorrect because classical systematics does not involve cytological studies (the study of cells).
- **Fixity of Species**: This is the correct answer, as it aligns with the belief that species do not change.
- **Dynamic Nature of Species**: This option is incorrect because classical systematics does not support the idea that species are dynamic or changeable.
- **Genetic Studies**: This option is also incorrect, as classical systematics does not involve genetic analysis or studies related to DNA.

4. **Conclusion**: Based on the analysis of the options, the belief of classical systematics is best represented by the "fixity of species."

**Final Answer**: Classical systematics believes in the fixity of species.

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