Natural Selection Genotypes

The first is mutation. Mutation is a change in the genetic code. Mutations can spontaneous, for reasons unknown. They are only evolutionarily important if their in a sex cell. This can be caused by radiation or toxic chemicals. The second is Natural selection. Natural selection is the biological characteristics that enhance survival, they will increase in frequency from generation to generation. Fitness has a lot to do with Natural selection. Fitness is the ability for an offspring to survive and of course reproduce , therefore giving it's genotypes to the next generation. There are four basic principles within Natural selection. There is variation, heritable, populations may have more offspring than resources available and more favored traits