Why are primers required in the DNA replication process?

When DNA polymerase encounters a nucleotide that is complementary to the template strand, it begins to add new nucleotides to the already-present 3'end of the DNA sequence.

In order to make up for the lack of a new sequence beginning, primers are allowed to find complementary partners. After that, DNA polymerase begins the process of replicating DNA by appending nucleotides to the 3' end of the primer sequence.

Primers are required in the DNA replication process because DNA polymerases, the enzymes responsible for synthesizing new DNA strands, require an existing strand of DNA or RNA to initiate the synthesis. Primers are short sequences of RNA or DNA that provide the starting point for DNA polymerases to begin synthesizing new DNA strands. They serve as templates for DNA polymerases to add complementary nucleotides and extend the DNA strand during replication. Without primers, DNA polymerases cannot initiate the replication process.