Question

Why must rna be incorporated into dna molecule initially during dna replication define the reason?

Answer 1

A primer is a short strand of RNA or DNA (generally about 18-22 bases) that serves as a starting point for DNA synthesis. It is required for DNA replication because the enzymes that catalyze this process, DNA polymerases, can only add new nucleotides to an existing strand of DNA. ... These RNA primers can be made de novo.

Answer 2

RNA acts as a starting point in DNA replication.

Explanation:

• RNA primers act as a starting point for DNA polymerase, which produces complementary DNA during DNA replication.

• DNA polymerase can only expand a nucleotide chain, not initiate one, hence primers are required. By extending an RNA primer in the 5' to 3' direction, DNA polymerase starts constructing a new DNA strand.

• One DNA polymerase copies each strand of the parental DNA. DNA polymerase can only expand a nucleotide chain, not initiate one, hence primers are required.