the word "atavistic" refers to the reappearance of a trait or characteristic in an organism that was present in its ancestors but may have skipped one or more generations. It suggests a regression to an earlier, more primitive state.
For example, if a person exhibits a physical or behavioral trait that was common in their ancestors but not in their immediate family, it can be considered atavistic. This could be seen in physical features like the presence of a tailbone or in behaviors that resemble those of earlier generations
