Final answer:
Scientists can use the observed differences in banding patterns on chromosomes to suggest that some variation in tail banding is genetic.
Step-by-step explanation:
Scientists can use the observed differences in banding patterns on chromosomes to suggest that some variation in tail banding is genetic. Chromosomes have distinct and reproducible banding patterns that can be visualized using staining techniques. An experienced geneticist can identify each band and further identify chromosomes based on size and centromere location. By comparing the banding patterns of individuals with different tail banding, scientists can infer that the variation is likely genetic.