Populations can have variety, despite being made up of the same species. If a population has different expressed traits, this can be due to different inherited alleles Genetic drift can cause a change in allele frequency in a population. What if you had to explain genetic drift to a friend who has not watched the video? Use the comics below in your narration of genetic drift. Refer to comic A, comic B, and comic C in your narrative. You can use the comics in any order you choose!