Both DNA and RNA is your answer.
DNA creates the proteins
RNA adds the correct amount of Amino Acids assembling them into protein chains
Explanation:
In population genetics, the term evolution is defined as a change in the frequency of an allele in a population. ... The allele frequency within a given population can change depending on environmental factors; therefore, certain alleles become more widespread than others during the process of natural selection.
They did it to get more detailed pictures of space
