Question

How does the universal presence of DNA relate to evolution?

Answer 1

I think the best way it relates to evolution is that it shows evidence for common ancestry. After all, the presence of some common feature in every organism on earth is great evidence to support the fact that they all descended from a common ancestor.

However, if you're an intelligent design advocate, then it would point to the common designer theory.

Still, this is a very controversial field, and both sides are in a fierce battle over who's right. Most schools teach just the evolution idea, but if you're at a school that teaches ID, then the ID idea would be handy to know. Either way, unless you want to pursue this in the future, just take what you need to get the grade.

Hope that helped :)