Suppose that a replicative DNA polymerase had its 3′ exonuclease site 1.5 nm from the polymerase site, rather than the 3.0 nm seen in Klenow fragment. How would this change affect the fidelity of the enzyme? Why? Describe an additional change that could give this enzyme the same fidelity as Klenow fragment while retaining the 1.5-nm inter-site distance?