DNA repair in eukaryotes that facilitates replication in regions of thymine dimers is mediated by a unique DNA polymerase
A)α.
B)η.
C)β.
D)σ.
E)δ.

Question

Quizplus · Accepted Answer

Thymine dimers are caused by exposure to UV radiation and can cause replication errors. DNA polymerase η is able to bypass these dimers and promote replication in this damaged region. This mechanism is known as translesion synthesis. DNA polymerases α, β, δ, and σ do not have this ability.

DNA Repair in Eukaryotes That Facilitates Replication in Regions of Thymine