Here's how it works:
1. DNA replication requires a primer, a short sequence of nucleotides that provides a starting point for DNA polymerase to begin synthesizing new DNA.
2. Primase is an RNA polymerase that synthesizes a short RNA primer complementary to the template DNA strand.
3. DNA polymerase can then extend this RNA primer by adding DNA nucleotides to the 3' end.
4. The RNA primer is later removed by an enzyme called RNase H, and the gaps are filled by DNA polymerase.
Therefore, primase plays a crucial role in DNA replication by providing the necessary 3' end for DNA polymerase to start synthesizing new DNA strands.
