Question

This is an enzyme that moves along the unwound single-stranded DNA, joining the newly arrived nucleotides to the complementary DNA strand.

Options:
Option 1: DNA directase
Option 2: DNA transferase
Option 3: DNA transcriptase
Option 4: DNA polymerase

Answer 1

DNA polymerase is the enzyme responsible for joining nucleotides to form a new complementary strand of DNA during replication.

Step-by-step explanation:

The enzyme that moves along the unwound single-stranded DNA, joining the newly arrived nucleotides to the complementary DNA strand is DNA polymerase. During DNA replication, DNA polymerase plays a crucial role in the Elongation stage, where it synthesizes a new strand base by base. It adds free nucleotides to the 3' end of the growing DNA chain, forming a double strand. This process continues until the new strand is fully complementary to the template strand, ensuring the information encoded in the original DNA is preserved in each new double helix.