In ontogenesis, gene according to certain when, the spatial order have the choice expression.

个体发育中，因按一定的时、空次序有选择地达。

This article introduces the viewpoint and expositions of L. S. Vygctsky on the ontogenesis of speech, the relations between the thought and speech.

该文介绍了维果茨基关于言语的个体发生的论述，言语个体发生过程中思维和言语的关系。

The ontogenesis of teaching learning is established on the certain psychological content and beamed psychological interaction and conformity of teacher and student;

教学的个体发生建立在师生确定的心理内容和定向的心理互动与整合之上；

The ontogenesis and differentiation of digestive canal and body wall in Urechis uniconctus was also studied using histological, histochemical and TEM methods in the laboratory.

应用组织学、组织化学和电镜技术对实验室内培养的单环刺螠虫消化道和体壁的发生及分化过程进行了研究。

It is clear that the exactness of time-space effect in the gene control system is essential for ensuring normal metabolic activities in the ontogenesis of the blunt-snout bream.

基因调控系统的时空精确性是保证团头鲂胚胎发育正常代谢活动的必要条件。

The results suggest that the Y chromosome heterochromatin appears to have a modifying effect on the phenotypic relationship between morphophysiological traits during human ontogenesis.

结果表明，Y染色体异染色质可能在人的个体发育过程中对形态生理学性状间的表型关系起一种修饰作用。

The development of research has resolved in part many important problems, such as the origin and molecular mechanism of ovule ontogenesis. But these problems still require further study.

近年来，随着研究手段的不断改进，研究者对许多关键性的问题，如胚珠的起源、胚珠发生发育的分子机制已经有了一定的认识，但是这些问题并未得到圆满的解决。