How does RNA Primer contribute to DNA replication?

RNA primers play a crucial role in the initiation of DNA replication by providing a starting point for DNA polymerase, which is essential for synthesizing new DNA strands. During replication, DNA polymerase cannot begin synthesizing a new strand of DNA on its own; it requires a free 3' hydroxyl group to attach incoming nucleotides. The RNA primer fills this need by providing the necessary starting point.

Once the primer is synthesized by an enzyme known as primase, DNA polymerase can extend from the primer, adding DNA nucleotides to create a new complementary DNA strand. This function of the RNA primer is vital for the overall process of DNA replication, as it ensures that elongation can occur effectively and leads to the accurate duplication of the genetic material.