Opisthokonta

Opisthokonta is a broad group of organisms that includes animals, fungi, and some related single-celled organisms. They share a common ancestor characterized by a unique feature: their cells have a single, rear-facing (or "posterior") flagellum used for movement or feeding. This group is important for understanding the evolution of complex life, as animals and fungi are two major branches within it. By studying Opisthokonta, scientists learn about the evolutionary connections and traits that link these diverse groups of living organisms.