Answer: D - replication of chromosomes.
Replication of chromosomes involves DNA in that it is the process by which cells copy their DNA in preparation for cell division. During replication, the double-stranded DNA molecule unwinds and separates into individual strands, and then new complementary strands are synthesized based on the original DNA sequence. This results in two identical DNA molecules, each consisting of one original strand and one newly synthesized strand. The process of DNA replication is critical for the accurate preservation of genetic information from one generation of cells to the next.
