For many species, chromosome number is a useful taxonomic character. 对许多物种来说,染色体数目是重要的分类学特征。
The Genetic Character and Diagnostic Characteristic of the Soil Derived from Carbonate Rock and Its Taxonomic Classification in Northern Guizhou 黔北碳酸盐岩发育土壤的发生特征与诊断特性及系统分类