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Phylogenetic Trees 


Each phylogenetic tree represents a different interpretation of human evolution. Firstly in the actual structure of these two phylogenetic trees, it can be seen that figure one provides a very linear progression of human evolution in steady, constant phases of evolution and extinction. The second chart however presents a more complex inerpretation and arrangement of its data, with not only more species but far greater periods of temporal overlap. The second figure gives a larger span of time for human evolution by beginning at the 6 million mark, figure 1 however starts at the 5 million mark and therefore reveals a less effective tree of human evolution. Chart 2 provides three possible direct ancestors to Homo Ergaster, these being Homo Rudolfensis, Homo Habilis as well as one unknown or missing link.
In regards to unknowns, tree one prefers to provide few missing links by only providing two, one of which is not directly related and therefore is not of......

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Approximate Word Count: 1032
Approximate Pages: 5 (250 words per double-spaced page)

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