How does the universal presence of DNA relate to evolution?

The strongest connection to evolution, in my opinion, is that it provides evidence of shared ancestry; after all, the existence of a trait that unites all living things on Earth is strong evidence that they are all descended from a single progenitor.

On the other hand, the common designer theory would be indicated if you support intelligent design.

Even so, this is a very contentious field, with both camps engaged in a bloody battle over who is correct. The majority of schools only teach the evolution theory; however, if your school practices ID, knowing the ID theory will be helpful. In any case, unless you plan to pursue this further, just take the courses you need to pass.

I hope it was helpful.

DNA contains genetic information, guiding the development of organisms. Mutations in DNA contribute to genetic diversity, influencing natural selection and evolutionary processes over generations.