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6[单选题]
哪些有关免疫球蛋白基因重排的叙述是正确的?


A.所有物种中V基因的数目是一样的

B.J是恒定区的一部分

C.各部分连接时,将产生缺失或重排

D.当一个等位基因中发生有意义的重排时,另一个等位基因也发生重排


 参考答案:
 佳题速递:
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