Low divergence

By necessity, conspecific individuals   diverge later than individuals from different species. Consequently,   within-species data sets have fewer characters for phylogenetic analysis,   diminishing the statistical power of traditional phylogenetic methods.

低分化

同种个体的分化必然要比不同物种的个体晚。因此，在种内数据集中，用于系统发育分析的特征较少，从而削弱了传统系统发育方法的统计能力。