Question

What evolutionary factors are responsible for the current decline in heritable phenotypic variation? What would happen to a population if there was no more introduction of fresh allelic variation? What would occur if mutation were totally eradicated? Why would this be detrimental to the long-term success of a population?

Answer 1

Answer: The decline in heritable phenotypic variation can be attributed to factors such as natural selection and genetic drift. If there was no more introduction of fresh allelic variation, a population would become genetically uniform, limiting their ability to adapt to new challenges. If mutation were totally eradicated, the lack of genetic variation would be detrimental to the population's long-term success, making it difficult for them to adapt and evolve.