What is population diversity and how is it related to evolut

What is population diversity, and how is it related to evolution? Why is genetic diversity (genetic variability) critical for evolution to occur? What would happen to a population or a species if it did not have any genetic diversity?

Solution

Population diversity is a measure that defines different populations in terms of the differences in the morphological and genetic variations among them.It is related to evolution in a way that the forces of evolution act on populations such that the population become geographically isolated and no genetic exchange takes place between them.In such cases,the population diverges to form new species resulting in population diversity.Genetic diversity is critical for evolution because it results from genetic variation in alleles in response to changing environmental conditions and this forms the basis of evolution.If a population or a species it did not have any genetic diversity,it would fail to adapt to the changes in the environmental conditions.