结果表明，与对称流向放行方案相比，单进口放行方案在流量不对称系数较大时有一定的优越性。
The result of a case study shows that each phase for an entrance has some priority under high dissymmetry coefficient.
最长与最短染色体比值变化较大，为2.78～3.20； 平均臂比、着丝点指数、核型不对称系数、相对长度变化范围较小。
The ratio of the longest chromosome to the shortest range in 2.78~3.20. And index, index of karyotypic asymmetry and relatived length changed indistinctly.
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