原始性状

推断系统发育的一个方法是准确查明那些与进化性状相对的原始性状

One method of inferring phylogeny is to pinpoint primitive as opposed to advanced characters .

要正确地指出原始性状和次生性状仍然感到困难。

The difficulty of pinpointing primitive and derived characters remains .

南京直立人的原始性状和发现的意义

The Main Features of Homo Erectus from Nanjing and Its Significance in Human Evolution

酸性火山岩中铀的原始性状、活化迂移及作为铀源的可能性

Original behavior , mobilization , migration of uranium in acidic volcanic rock and its possibility as a uranium source

他把原始的性状叫做近形性态。

He termed primitive characteristics plesiomorphous character-states .

通过与其它具T-型染色体类群在花形态发生上的比较，认为黄连属表现出了某些原始的性状，这一结果与分子系统学研究认为黄连属为毛茛科的基部类群的结论一致。

In comparing the floral morphogenesis with that of other genera with T-type chromosomes in the family , we considered that Coptis contains some primitive characters . The results are consistent with molecular systematic studies showing Coptis as one of the basal groups of Ranunculaceae .

现存蜉蝣目昆虫的原始特征和独特性状

The primitive and unique characters of extant mayflies