In a Hypothetical Experiment, Researchers Sequence a Gene from a Colony

Multiple Choice

In a hypothetical experiment, researchers sequence a gene from a colony of bacteria at various times in the history of the colony.In the common ancestor, the nucleotide at site 998 is A.After 1,500 generations, it changes to G.After 5,000 generations, it changes back to A.This is an example of a(n)

A) inversion.
B) coincident substitution.
C) parallel substitution.
D) transversion.
E) reversion.