How does studying embryology help show evidence of evolution?

Answer 1

Some believe embryos all looking startlingly alike in the early stages of development suggests that organisms had a common ancestor.

However, while it is commonly believed that embryos are very much alike in the early stages of their development, this is actually not true, and is based upon drawings produced by evolutionary apologist Ernst Haeckel in the 19th century. For over 60 years this scientific notion has been recognized as a fraud and the theory of 'embryonic recapitulation' (the reliving of evolutionary history in the embryonic stage of organisms) theory has been invalidated. What is surprising is that this discredited theory is still taught and the pictures reproduced in science textbooks down to the present day.

In any case, even if embryos were in fact similar, this would not necessarily prove evolution, but could also quite logically be evidence of a common designer, just as the Porsche and the Volkswagen, with their resultant similarities, were both designed by Dr Porsche.