三名美国科学家因为发现了能在细胞分裂时防止染色体散裂的“保护帽”而赢得今年诺贝尔医学奖。
The discovery of a "protective cap" that prevents chromosomes from falling apart when cells divide has earned three American researchers this year's Nobel prize in medicine.
三位科学家发现了端粒的工作机理,这种(酉每)可以产生DNA的微小部分,包裹染色体的顶端。
The scientists discovered the workings of telomerase, an enzyme that produces tiny units of DNA that seal off the tips of chromosomes.
人体X染色体的显微扫描照片。 (得到照片研究中心允许而复制) X染色体是Y染色体的三倍大,而且也传递着比其多100倍的基因信息。
The X chromosome is three times the size of the Y chromosome and carries 100 times the genetic information.
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