释义 |
X LETTER plural X's or Xsx plural x's or xs eksn [C] the 24th letter of the English alphabet英语的第24个字母An X-chromosome is a sex CHROMOSOME which exists as one of a pair in the cells of female humans and many female animals. X染色体A female has two X-chromosomes in each cell while a male has one X- and one Y-chromosome.女性的每个细胞中有两条X染色体,而男性则有一条X染色体和一条Y染色体。
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