Three morphogenetic waves in early development of Physa acuta (Gastropoda, Pulmonata).
Evidence is presented that there are three morphogenetic waves in early development of Physa acuta: a) around 24-cell stage, b) at early gastrula, and c) at early trochophore, using a proflavin biological test. These morphogenetic maxima fit very well with three transcriptional maxima. Furthermore, it is shown that proflavin inhibits almost completely the RNA synthesis.
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JA
D000166:Acridines / Q000494:pharmacology*; D000367:Age Factors; D000818:Animals; D006131:Growth Inhibitors / Q000494:pharmacology; D009024:Morphogenesis / Q000187:drug effects; D011370:Proflavine / Q000494:pharmacology*; D012313:RNA / Q000096:biosynthesis; D012908:Snails / Q000196:embryology*; D013194:Staining and Labeling; D013997:Time Factors; D014158:Transcription, Genetic / Q000187:drug effects*
D000166:Acridines; D006131:Growth Inhibitors; D012313:RNA; D011370:Proflavine