She should probably show a picture of the singer so that people know what the singer looks like and will be able to associate a name with a face
The answer is: Microevolution studies evolution at or below the species level.
Microevolution refers to the changes that are produced in the gene pool within a population, at or below the species level. These changes can happen in many different ways. These mechanisms are the following: Natural selection, Mutation, Gene Flow, Non-random mating and Genetic Drift.
They are very suspicious and it makes them unreliable.