There are prerequisites for natural selection to take place. Can you identify them? Check all that are correct.

What are the prerequisites for natural selection to take place?

1. In a given population genetic variation must exist.

2. Variations within a population are always the result of DNA mutations.

3. In a given population, more offspring are produced than can survive.

4. Reproduction within a population is differential.

5. In any population natural selection can only occur if there is sexual reproduction.

6. Inherited traits that provide an advantage will lead to death and possible extinction.