[A particularly long chromosome probably belonging to the A group].
D000015:Abnormalities, Multiple / Q000235:genetics*; D000293:Adolescent; D002869:Chromosome Aberrations; D002900:Chromosomes, Human, 1-3; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D008297:Male
Un cromosoma particolarmente lungo probabilmente del gruppo A.