Basic unit or smallest taxon of classification is

Options

A. Genus
B. Species
C. Sub-species
D. Variety

Answer

**Step-by-Step Solution:**

1. **Understanding Taxonomy**: Taxonomy is the science of classification of living organisms. It involves organizing species into a hierarchical structure based on shared characteristics.

2. **Hierarchical Classification**: The classification system is structured in a hierarchy. The main categories, from the broadest to the most specific, are:
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species

3. **Identifying the Smallest Taxon**: Among these categories, the species is recognized as the most specific and smallest unit of classification. It represents a group of individuals that can interbreed and produce fertile offspring.

4. **Evaluating Options**:
- **Genus**: This is not the smallest taxon; it is one level above species.
- **Species**: This is the correct answer as it is the smallest taxon in the classification hierarchy.
- **Subspecies**: While subspecies exist, they are not officially recognized as a primary taxon in the standard classification system.
- **Variety**: Similar to subspecies, variety is not a formal category in the taxonomic hierarchy.

5. **Conclusion**: The basic unit or smallest taxon of classification is **species**.

**Final Answer**: The basic unit or smallest taxon of classification is **species**.

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