"Gastrulation" Quotes from Famous Books
 ... blastopore. In the higher animals a good deal of food-yolk is stored up in the germ, and so the vase-shaped structure has been flattened and altered. It has, however, been shown that all embryos pass through this stage (gastrulation), and we again infer the existence of a common ancestor of that type—the Gastraea. The lowest group of many-celled animals—the corals, jelly-fishes, and anemones—are essentially ...
— The World's Greatest Books - Volume 15 - Science • Various |
