Discuss the evidence furnished by comparative embryology in support of evolution.

 In passing from the egg to the adult the individual goes through a series of changes. In the course of this development we see not only the beginnings of the organs that gradually enlarge and change into those of the adult animal, but also see some organs appear and later disappear before the adult stage is reached. We find, moreover, that the young sometimes resemble in a most striking wav the adult stage of groups that we place lower in the scale of evolution.

Many years before Darwin advanced his theory of evolution through natural selection, the resemblance of the young of higher animals to the adults of lower animals had attracted the attention of zoologists and various views, often very naive, _____ ______ ________ _________ __________ ________.
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