Chromosomes, which are found in the nucleus of a cell, are thread-like structures that contain genes which determine the characteristics of an individual.
染色体是在细胞核中发现的，它是一种含有基因的线型结构，能够使不同人有不同特征。
Chromosomes, which are found in the nucleus of a cell, are thread-like structures that contain genes which determine the characteristics of an individual.
染色体是在细胞核中发现的，它是一种含有基因的线型结构，能够使不同人有不同特征。
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