单词：sex chromosome
sex chromosome的用法和样例：
例句
- Mammals normally have two sex chromosomes.哺乳动物正常情况下有两种性染色体。
- Besides,we discussed the sex chromosome and the mechanism of sex determination of Elaphodus cephalophus.根据现存的几种核型的分析对毛冠鹿的性染色体及性别决定机制作了初步的探讨。
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英语单词荟萃