The significance of genetic diversity in a population lies in its contribution to a population's ability to adapt and survive in changing environments. High genetic diversity provides a greater pool of traits that can enhance resistance to diseases, improve reproductive success, and increase overall resilience to environmental stressors. Populations with low genetic diversity are more susceptible to extinction due to their reduced ability to cope with challenges, such as climate change or emerging pathogens. Therefore, maintaining genetic diversity is essential for ecosystem stability and long-term survival.