1. 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.

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

3. Knowledge of the early ontogenesis, especially sense organs development and their behaviour function remains rare yet.

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

5. There are differentiation grades of cells, from oosperm, embryonic stem cells and multipotential stem cells to mature cells which constitute adult tissues and organs in mammal ontogenesis.

6. 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.

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

8. 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.

9. By observing the embryo developing process and the behavior of learning and memory of day-old chicks, we try to explore the influence of HMFS on animal's ontogenesis and high neural activation.