In E. coli, there is a mutation in a gene called dnaB that alters the helicase that normally acts at the origin. Which of the following would you expect as a result of this mutation?
A) No proofreading will occur.
B) No replication fork will be formed.
C) The DNA will supercoil.
D) Replication will occur via RNA polymerase alone.
E) Replication will require a DNA template from another source.

Question

Quizplus · Accepted Answer

DnaB is responsible for unwinding the double-stranded DNA at the replication origin, creating a replication fork. Therefore, a mutation in the dnaB gene would prevent the formation of a replication fork and halt the replication process.

In E Coli, There Is a Mutation in a Gene Called