Species

The primary structural unit in the system of living organisms. The principal taxonomic category in biological systematics. A species is understood as the aggregate of populations of individuals capable of interbreeding to produce fertile offspring, occupying a particular range, possessing a number of similar morpho‑physiological characters and types of interaction with the environment, and separa…

The primary structural unit in the system of living organisms. The principal taxonomic category in biological systematics. A species is understood as the aggregate of populations of individuals capable of interbreeding to produce fertile offspring, occupying a particular range, possessing a number of similar morpho‑physiological characters and types of interaction with the environment, and separated from other such groups of individuals by an almost complete absence of hybrid forms.