因每个SSR序列的基本单元重复次数在不同基因型间差异很大，从而形成其座位的多态性。

The repeat times of basic units of each SSR sequence are different among different genotypes, so polymorphism of the seat is formed.

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比较不同基因组间的重复序列分布则能反映出不同基因组的进化史，同时也能帮助我们理解不同物种间基因组功能方面的知识。

Comparative genomics on tandem repeats distribution is facilitated to further understand the history of genome evolution as well as the gene function of different species.

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