Genealogical studies on interesting families of defective colour vision discovered by a mass examination in Japan and Formosa.
D002648:Child; D003119:Color Perception Tests; D003117:Color Vision Defects / Q000453:epidemiology / Q000235:genetics*; D003469:Culture; D005260:Female; D005838:Genotype; D006801:Humans; D007178:Inbreeding; D007564:Japan; D008297:Male; D008403:Mass Screening; D010375:Pedigree; D012730:Sex Chromosomes; D012934:Social Isolation