Why is genetic variability important in a population?

Genetic variability is crucial in a population because it enhances the chances of survival when faced with environmental changes. This variability provides a wider range of traits within the population, which can be beneficial when conditions such as climate, food availability, or disease pressures change. For example, if a new disease emerges or if there’s a shift in climate that favors certain traits over others, individuals with advantageous genetic traits are more likely to survive and reproduce. This process, known as natural selection, ultimately contributes to the overall resilience and adaptability of the population. A genetically diverse population is better equipped to evolve in response to environmental changes, ensuring its continued survival over time.