The palmar a-b ridge count and sex chromosomes.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003878:Dermatoglyphics; D005260:Female; D006801:Humans; D007713:Klinefelter Syndrome / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012729:Sex Chromosome Aberrations / Q000473:pathology*; D014424:Turner Syndrome / Q000473:pathology