If natural selection in a particular environment favored genetic systems that permitted the production of daughter "cells" that were genetically dissimilar from the mother "cells," then one should expect selection for which of the following?
I.polynucleotide polymerase with low mismatch error rates
II.polynucleotide polymerases without proofreading capability
III.batteries of efficient polynucleotide repair enzymes
IV.polynucleotide polymerases with proofreading capability
V.polynucleotide polymerases with high mismatch error rates
A) I only
B) I and IV
C) I, III, and IV
D) II and V
E) II, III and V

Question

Quizplus · Accepted Answer

If natural selection favored genetic systems that produced daughter cells genetically dissimilar from the mother cells, it would select for mechanisms that increase genetic variability. Polynucleotide polymerases without proofreading capability (II) and those with high mismatch error rates (V) would increase the likelihood of mutations, thereby increasing genetic diversity among offspring.

If Natural Selection in a Particular Environment Favored Genetic Systems