The individual, incest, and exogamy.
D000223:Adaptation, Psychological; D000293:Adolescent; D000328:Adult; D002648:Child; D002668:Child Rearing; D002675:Child, Preschool; D005190:Family; D005219:Father-Child Relations; D005260:Female; D006801:Humans; D007179:Incest; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008393:Marriage; D008425:Maternal Behavior; D008426:Maternal Deprivation; D001523:Mental Disorders / Q000235:genetics; D009034:Mother-Child Relations; D012649:Self Concept; D012725:Sexual Behavior; D012951:Socialization; D013609:Taboo