x-chromosome abnormalities性染色体异常
x-chromosome typing法科学
nucleolus X-chromosome核仁X染色体
x-chromosome linkedx染色体连锁
X-chromosomeX染色体;档
X-chromosome elimination性染色体消失
inactive x-chromosome失活x染色体
X-chromosome X染色体
N-COUNT(可数名词) An X chromosome is one of an identical pair of chromosomes found in a woman's cells, or one of a nonidentical pair found in a man's cells. X chromosomes are associated with female characteristics. Compare . X染色体; 与人体女性性征相关联