The four forces of evolution are mutation, gene flow, genetic drift, and natural selection (Wwnorton). What I understand about mutation is that it is a random change that sometimes is good or bad. Whenever I hear the word mutation I automatically think of the X-Men because they were labeled as mutants and had random mutations happen to them. What I know about gene flow right now is that its when properties from one party flows to the other party that did not have that property. In my mind there would be two parties next door to each other and one of the guests switched parties. When I think of natural selection it makes me think of the saying that only the strong survive. Some animals will evolve better to their surroundings than others.
