鸡的胚胎发育标本既能比较形象地演示动物个体的发育过程,说明受精卵是怎样发育成一个新个体的,又能用于演示生物进化在胚胎学上的证据(通过与人的胚胎发育比较,清楚地观察到其早期阶段和晚期阶段发育的相同及相近之处,来说明人是由有尾的动物进化而来的)。基于这种情况,我们制 Embryonic specimens of chickens can both demonstrate the animal development process more clearly and show how the fertilized egg develops into a new individual, and can also be used to demonstrate the evolutionary evidence of embryology (by comparison with human embryonic development). The same and similar developments in the early and late stages of development are clearly observed to illustrate that humans have evolved from tailed animals. Based on this situation, we made