par Geuskens, Maurice 
Référence Experimental cell research, 49, 3, page (477-487)
Publication Publié, 1968-03
Référence Experimental cell research, 49, 3, page (477-487)
Publication Publié, 1968-03
Article révisé par les pairs
| Résumé : | Normal (Paracentrotus ♀ x Paracentrotus ♂) and lethal hybrid (Paracentrotus ♀ x Arbacia ♂) sea urchin embryos were fixed at the time of blocking (late bastulae) and 6 h later, and studied with the electron microscope. At the time of the arrest of development the hybrid blastulae lack a typical ergastoplasm and contain many vesicles dispersed throughout the cytoplasm. The situation becomes normal 6 h later. These results are discussed in relation to current knowledge of nucleic acid metabolism in lethal hybrids. © 1968. |
