In this volume of ASPA, devoted to developmental biology research, 9 authors from different fields of developmental biology present their investigations on various developing plant and animal models. An a priori concern in mind that weightlessness might have negative effects on developmental processes, it is encouraging to know that the overall development of various organisms tested so far is essentially correct under spaceflight conditions, leading to viable individuals with viable offspring. On the other hand, particular studies on specifically neurophysiological aspects in...

The contributions are grouped in four sections: selected aquatic plant organisms, selected aquatic animal organisms, historical and conceptual aspects of causal embryology, and contributions of general value to embryological research. In particular, chapters address research done on the following