Question

Why is genetic variability essential for a species to survive?

Answer 1

Genetic variability is essential for a species' survival because it provides the raw material for adaptation and evolution. Variations within a population increase the chances that some individuals possess traits suited to changing environments or new threats, enabling them to survive and reproduce. Processes such as mutation, gene recombination during sexual reproduction, migration, and gene flow introduce and maintain this variability. Without genetic diversity, species face higher risks of extinction due to environmental changes, diseases, or other challenges, as limited variation reduces their adaptive potential. Hence, genetic variability ensures resilience and long-term survival of species.