What is one potential effect of decreased genetic diversity in a species?

Decreased genetic diversity in a species can lead to reduced adaptability to changes in the environment. Genetic diversity is crucial because it allows populations to have a wider variety of traits. This variety means that some individuals within a species may possess traits that are advantageous in changing conditions, such as alterations in climate, availability of resources, or the presence of new predators or diseases.

When genetic diversity is low, the gene pool is limited, and the population may become uniform in its traits. If the environment shifts and the traits that were once advantageous no longer provide a benefit, a genetically uniform population may struggle to adapt or survive. This lack of adaptability can lead to increased vulnerability and possible extinction, as the species is unable to respond effectively to environmental pressures.

In contrast, a population with high genetic diversity is more likely to include individuals who can thrive under new conditions, ultimately supporting the survival and continuation of the species.