Studying human chromosomes today.
D000782:Aneuploidy; D002869:Chromosome Aberrations / Q000266:history; D025063:Chromosome Disorders; D002875:Chromosomes; D003582:Cytogenetics; D004314:Down Syndrome / Q000235:genetics; D002523:Edible Grain / Q000254:growth & development; D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000235:genetics; D007938:Leukemia / Q000235:genetics; D008297:Male; D009369:Neoplasms / Q000235:genetics; D010375:Pedigree; D010641:Phenotype; D011596:Psychomotor Disorders / Q000235:genetics; D012730:Sex Chromosomes