Besides replicating cell division the other fundamental role of dna is?

2 roles of DNA
1. It replicates (reproduces) itself before the cell divides ensuring that the genetic information in the descendant cells is identical. 
2. It provides the basic instructions for building every protein in the body. 

Do you have an a b c d ? ? respond ; )

Communication. releasing emotions/feelings to someone you know you can count on. ; ) someone who may not understand but willing to listen.