. . "Chromosome XPTNCI" . "Chromosome_X"^^ . "C13285"^^ . "Chromosome X"^^ . "X ChromosomeSYNCI" . "The sex chromosome that is present in both sexes: singly in males and doubly in females.NCIWordNet" . . "Cell Component"^^ . "Chromosome X"^^ . "The female sex chromosome, being the differential sex chromosome carried by half the male gametes and all female gametes in man and other male-heterogametic species.MSH2001" . "C0043292"^^ .