Dna polymerases use their activity to remove a mismatched basepair.

~Hello there! ^_^

Your question: DNA  polymerases use their activity to remove a mismatched basepair.

Your   DNA  polymerases use their 3'-> 5' exonuclease activity to remove a mismatched basepair.

The answer to fill up the blank is 3'-> 5' exonuclease.

Hope this helps! :D

Scientists believe green algae to be the ancestors of land plants. The classification division separating algae from the kingdom Plantae began with fossil evidence. To be successful land plants require certain modifications. This early Devonian land plant had both vascular tissue and, as seen here seed pods.