Identification of vertebrate phylotypic stage by transcriptome analysis

科学家之间对个体发育和系统发育之间的关系的表述一直存在争议。在此，我们分析了小鼠、鸡、非洲爪哇和斑马鱼胚胎的基因表达谱，明确了咽部发育阶段是最保守的阶段，发育沙漏模型最好地解释了个体发育和系统发育之间的关系。

Formulation of the relationship between ontogeny and phylogeny (=evolution) has been controversial between scientists. Here we have analyzed gene expression profiles of embryos of mice, chicken, xenopus, and zebrafish, and clarified that pharyngula stages are the most conserved stages, and the developmental hourglass model best explains the relationship between ontogeny and phylogeny.