Question

question 5 of 10
what is the role of the dna ligase in dna replication?
a. it creates the replication fork.
b. it breaks apart the bases.
c. it checks the dna for errors.
d. it ties the chunks of dna together.

Explanation:

During DNA replication, DNA ligase catalyzes the formation of phosphodiester bonds. This action links the Okazaki fragments (chunks of DNA) on the lagging strand, creating a continuous DNA strand. Option A is incorrect as helicase creates the replication fork. Option B is wrong because helicase also breaks apart the base - pair hydrogen bonds. Option C is inaccurate as DNA polymerase checks for errors, not DNA ligase.

Answer:

D. It ties the chunks of DNA together