What term describes the variety of genes within a given species?

The term that describes the variety of genes within a given species is genetic diversity. Genetic diversity refers to the total number of genetic characteristics in the genetic make-up of a species. This diversity is crucial because it allows populations to adapt to changing environments, resist diseases, and maintain overall ecosystem resilience. High genetic diversity within a species can lead to a better chance of survival in the face of environmental stresses and changes.

In contrast, ecosystem diversity refers to the variety of ecosystems within a region, species diversity focuses on the number of different species within an area, and habitat diversity pertains to the different types of habitats within an ecosystem. While each of these concepts is important for understanding biodiversity as a whole, they do not specifically address the genetic variations found within a single species.