In an experiment you use DNA pol I – Klenow fragment. When all other requisites for replication are added, then what will be the effect on the newly replicated DNA? Consider leading strand only.

Correct Answer: DNA produced will be shorter
Klenow fragment provides the 5’ -> 3’ exonuclease activity used to remove the primer. In its absence the primer remains and hence DNA produced is shorter (i.e. original length-length of primer).