Answer
Evolution occurs when mutations cause genetic variation in a population. If the variation leads to improved fitness in an individual, the beneficial gene will be passed on, eventually manifesting in a larger proportion of the population. Because of this, the frequency of the beneficial allele will increase, and the original allele will be overshadowed.
Work Step by Step
Evolution occurs when mutations cause genetic variation in a population. If the variation leads to improved fitness in an individual, the beneficial gene will be passed on, eventually manifesting in a larger proportion of the population. Because of this, the frequency of the beneficial allele will increase, and the original allele will be overshadowed.
