[Structure of the morphogenetic movements of gastrulation in Anura. II. The elementary morphogenetic processes]

Abstract

The clinostate rotation causes a wide range of gastrulation abnormalities in the Anura. A special investigation has shown that all gastrulation variants may be represented as various spatial-temporal compositions of the same morphogenetic processes isolated by means of formal experimental procedure. These processes are structurally stable rearrangements of tissue morphology and are spread in the tissue as a wave embracing more and more cells. The change of one local morphology for another may proceed either in the form of "shock wave", a moving distinct border between the cells already switched and not yet switched to the new automorphous movement, or in the form of "deployment" when the transition from one local morphology to another is continuously deployed in space.