In order for evolution to take place, what has to happen? A. An organism needs to find several mates. B. An organism's DNA must change. C. The environment has to change. D. The number of individuals in a population has to decrease.
Mutation should happen in DNA for it to evolve into an organism. Mutations are nothing but the sudden change in the structure of a gene.
The mutation could happen due to several reasons, and they are environmental changes, which includes chemical changes happening outside, temperature changes, etc.
Mutation helps an organism to adapt to certain environmental conditions. But, mutations can have negative effects too.
Hence, for an organism to evolve or evolution to happen, there is a need for change in DNA.
