Thus, all mutations that affect the fitness of future generations are agents of evolution. Mutations are essential to evolution. Every genetic feature in every organism was, initially, the result of a mutation.

Can mutations cause rapid evolution?

For example, a fast-evolving trait could be under sustained and intense selection pressure, so that when a favorable new variant arises, it quickly spreads throughout the population. Alternatively, mutations might affect certain traits more than others, leading to more variation in these traits.

How does DNA change in evolution?

Evolution is a gradual change to the DNA of a species over many generations. It can occur by. Such mutations are thus more likely to be passed on to the next generation, so they increase in frequency in a population. Gradually, these mutations and their associated traits become more common among the whole group.