Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. ... Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.
Nagging in this situation is shown as a way of exercising social control. Markus's mother had used nagging to enforce social control wherein she nags to make Markus does his homework instead of playing video games. Through, nagging his mother was able to make him comply and conform to what is expected of him to do, which is to do his homework before playing videogames
