Embryology - Embryology ,chickens...

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Embryology Darwin noted the striking similarity among embryos of complex animals such as humans, chickens,  frogs, reptiles, and fish. He wrote that the uniformity is evidence for evolution. He pointed out that  human embryos pass through a number of embryonic stages inherited from their ancestors because  they have inherited the developmental mechanisms from a common ancestor. These mechanisms  are modified in a way that is unique to an organism's way of life. The similarities in comparative embryology are also evident in the early stages of development. For  example, fish, bird, rabbit, and human embryos are similar in appearance in the early stages. They  all have gill slits, a two-chambered heart, and a tail with muscles to move it. Later on, as the embryos  grow and develop, they become less and less similar.
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Embryology - Embryology ,chickens...

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