Question

Immediately after the primers have annealed to the target sequence, what happens?

1) The DNA polymerase extends the primers by adding nucleotides to the growing DNA strand.
2) The DNA polymerase denatures the DNA strands.
3) The DNA polymerase breaks down the primers into individual nucleotides.
4) The DNA polymerase binds to the primers and prevents further DNA synthesis.

Answer 1

The DNA polymerase extends the primers by adding nucleotides to the growing DNA strand.

Step-by-step explanation:

Immediately after the primers have annealed to the target sequence, what happens?

1. The DNA polymerase extends the primers by adding nucleotides to the growing DNA strand.

Step-by-step Explanation:

After the primers have annealed to the target sequence, the DNA polymerase binds to the primers and starts adding nucleotides to the 3'-OH end of the primer. This process is called extension. As the DNA polymerase adds nucleotides to the primer, it creates a new DNA strand that is complementary to the original DNA strand. This extension occurs in both the leading and lagging strands during DNA replication or PCR.