小蝌蚪的尾巴消失了,用鳃呼吸的黑逗点,变成了彩色圆臀的小青蛙;毛毛虫作茧自缚,羽化出斑烂的彩蝶;母体子宫里的原肠胚,发育成手足分明的胎儿……动物个体发育中的器官分化是和谐生命乐章,但动物怎样修饰自己,却一直是个谜。最近,在美国休斯医学院进行 The tail of the moustache disappeared. The black comma with his baboon breathing turned into a colorful frog with a small round buttocks. The caterpillar made a roach for the roach and eroded the mottled butterfly. The gastrula in the mother’s womb developed into a distinctly hand-footed frog. Fetus ... The organ differentiation in animal development is a harmonious life movement, but how animals modify themselves has always been a mystery. Recently, at the Hughes Medical School in the United States