Low genetic diversity does not help in evolution in population of a species or organism. Genetic diversity paves the way for the evolution of organism. Low genetic diversity may lead to the extinction of a species. When many species gets extinct then it leads to mass extinction.
During environmental change, that species evolve whose alleles are able to tolerate or resist the disease or any other stressful condition. Genetic diversity results in natural selection of the species.
Low genetic diversity does not help in evolution in population of a species or organism. Genetic diversity paves the way for the evolution of organism. Low genetic diversity may lead to the extinction of a species. When many species gets extinct then it leads to mass extinction.
