Objective: to probe into clinical significance of long or short Y chromosome.

目的探讨大小y染色体核型的临床意义。

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Short tandem repeat ( STR) is one of the genetic polymorphic markers within the NRY region in Chromosome Y, which is also called microsatellite.

短串联重复（STR）是Y染色体NRY区的多态性遗传标记的一种，又称微卫星。

youdao

Short tandem repeat ( STR) is one of the genetic polymorphic markers within the NRY region in Chromosome Y, which is also called microsatellite.

短串联重复（STR）是Y染色体NRY区的多态性遗传标记的一种，又称微卫星。

youdao