The level of classification that contains the least amount of organisms is the Genus.
1. **Explanation:**
- Class, Phylum, and Order are broader classifications that encompass multiple genera.
- Genus is a more specific taxonomic rank that groups together closely related species.
- For example, in the classification of humans:
- Kingdom: Animalia
- Phylum: Chordata
- Class: Mammalia
- Order: Primates
- Family: Hominidae
- Genus: Homo (includes species like Homo sapiens)
- Species: Homo sapiens
2. **Example:**
- If we take the example of the genus "Canis," it includes species like wolves (Canis lupus), domestic dogs (Canis lupus familiaris), and jackals (Canis aureus). These species belong to the same genus but are distinct from species in other genera.
Therefore, the Genus level of classification contains the least amount of organisms compared to Class, Phylum, and Order.
