A cell with a defect in the proofreading function of DNA polymerase is observed to have a rate of incorporation of incorrect bases into newly synthesized DNA that is 100 times greater than a cell with a nondefective, normal DNA polymerase. Estimate from this number what fraction of incorrect nucleotide incorporations are corrected by the proofreading function of DNA polymerase in the cell with normal DNA polymerase.
A)0)9 percent
B)9)0 percent
C)99.0 percent
D)99.9 percent

Question

Quizplus · Accepted Answer

The proofreading function of DNA polymerase corrects 99.0 percent of incorrect nucleotide incorporations.

A Cell with a Defect in the Proofreading Function of DNA