Restoration of the wild type phenotype in a mutant organism can result from which of the following types of mutations?
A) Back mutation
B) Suppressor mutation
C) Forward mutation
D) Back mutation and Suppressor mutation
E) Suppressor mutation and Forward mutation

Question

Quizplus · Accepted Answer

Restoration of the wild type phenotype in a mutant organism can result from back mutation or suppressor mutation. Back mutation is a mutation that reverses the effects of the original mutation, leading to restoration of the wild type phenotype. A suppressor mutation is a second, compensatory mutation that restores the function of the original gene or compensates for the effect of the original mutation, resulting in the wild type phenotype being restored. Therefore, both back mutation and suppressor mutation can result in restoration of the wild type phenotype.

Restoration of the Wild Type Phenotype in a Mutant Organism