University of Central Florida (UCF) BSC1005 Biological Principles Practice Exam 2

The effect of adaptation on species populations as a result of environmental changes, such as those caused by continental drift, involves an increase in genetic diversity. When continental drift leads to changes in environments, such as the alteration of climate, habitat availability, and resource distribution, the isolated populations can be subjected to different selective pressures.

As populations adapt to these changing environments, they may develop new traits that better suit them to their specific conditions. This process often occurs through the accumulation of genetic variations, which can create a more diverse gene pool within a population. Increased genetic diversity enhances the ability of species to adapt to changing environments and can improve overall resilience against diseases, environmental stresses, and other factors that might threaten population survival. Thus, adaptation resulting from environmental changes typically promotes genetic diversity within species, enabling them to thrive in various ecological niches.