Definition: A variation involving a single base-pair, occurring in at least 1% of the population. Related Vocabulary: MutationNucleotideVariation (Biology)Symposia: Comparative Anthropogeny: From Molecules to SocietiesExploring the Origins of Today's HumansImpact of Infectious Disease on Humans & Our OriginsImplications of Anthropogeny for Medicine and HealthThe Evolution of Human Physical Activity