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https://docs.google.com/a/sunprairieschools.org/document/d/1_K8nVeJPSeY_NUSK9gHrbRW3twt8vphda26j_7JPB7Q/edit?usp=sharing

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By: Abbey Widiker and Autumn Dushack   Hour 3

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By: Abbey Widiker and Autumn Dushack   Hour 3

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Archaeopteryx

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For the chick, in the first stage of embryology, the tail is protruded a lot from the embryo. While looking at the other organisms, you can see that they look very similar. In the second stage of embryology, the chick’s tail is receding slightly but not by much. In the third stage of embryology, the chick tail has receded massively but is still visible on the fetus. This means that the DNA sequence of the MANX gene remained relevant and continued until the end of the sequence resulting in a tail in the fetus. Since the chick ended up with a tail, it means that the MANX gene stayed prevalent throughout the sequence.

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Through our evolutionary tree you can see that the insect and the Archaeopteryx are not closely related because they only have one trait in common and it is that they are both organisms with cells that have DNA. You can also see that the Archaeopteryx and the Waldrapp Ibis are both very closely related because they each have five traits in common on the evolutionary tree. The more traits organisms have in common the more closely related they are due to evolution. The more traits they have in common the closer they are because it makes them more similar.

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https://docs.google.com/a/sunprairieschools.org/spreadsheets/d/158Gs7dgnTkrnqndkVZPkEWLEQkSbrp6RXRDEE-TirBM/edit?usp=sharing

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Evolution is shown in the fossils of these organisms in their wings. In the Archeopteryx you can see that it has the radius and humerus but at the end only has two claws. Then you look at the structure of the present day bird which is the White-tailed Tropicbird it also has the humerus and the radius but instead of just the two claws it has three. This could have happened to assist the bird in its environment. This shows that over time the organism changed, but do to its structural similarity they both came from similar ancestors.