 The study found that background selection was the primary driver of neutral genetic diversity in humans, while selective sweeps were largely unimportant. This suggests that most of the genetic variation observed in humans is due to background selection rather than adaptive substitutions. Additionally, the study found that the majority of deleterious mutations affecting neutral diversity occur in non-exonic regions, suggesting that these regions may be more vulnerable to purifying selection. This article was authored by David A. Murphy, E. L. Eliashiv, Guy Amster and others.