Variation in the number of presacral vertebrae in Bantu-speaking South African Negroes.
D044466:Asian People; D044383:Black People; D001270:Cervical Atlas / Q000033:anatomy & histology; D002574:Cervical Vertebrae / Q000033:anatomy & histology; D005260:Female; D005787:Gene Frequency; D006801:Humans; D008297:Male; D009656:North America; D044469:Racial Groups; D012272:Ribs / Q000033:anatomy & histology; D012737:Sex Factors; D013019:South Africa; D013131:Spine / Q000033:anatomy & histology*; D044465:White People