A genetically distinct group of individuals sharing a common gene pool and reproductively isolated from other groups is a

A genetically distinct group of individuals sharing a common gene pool and reproductively isolated from other groups is called a species.

In biological terms, a species is often defined using the Biological Species Concept, which emphasizes the importance of reproductive isolation. Members of a species can interbreed and produce fertile offspring, while barriers exist that prevent them from mating with individuals from other species. These barriers can be prezygotic, such as differences in mating behaviors or timing, or postzygotic, such as hybrid offspring that are sterile.

The concept of species is central to the field of taxonomy, which is the science of classification of organisms. Understanding what constitutes a species helps biologists in studying biodiversity, evolutionary biology, and conservation efforts, as it allows them to identify units of biodiversity that are essential for maintaining ecological balance.