Question

Which enzyme catalyzes the elongation (synthesis) of a dna strand in the 5' → 3' direction?

Answer 1

A DNA strand is lengthened in the 5'-3' direction by DNA polymerase. And this process is known as the elongation.

What are the properties of DNA Polymerase?

• Using the DNA template strand and a starting primer, an enzyme known as (DNA-dependent) DNA polymerase creates a new DNA strand in the 5' to 3' direction.
• The growing synthesized DNA strand is supplemented by the DNA polymerase with complementary nucleotides one at a time. Base-pairing is the process by which the complementary sets of nucleotides are joined to the bases of the template DNA strand.
• Some DNA polymerases also possess 3'-5' exonuclease activity, which checks DNA strands for replication mistakes.

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