Cranial Lab

Cranial Lab - support the idea that there was another group...

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Hypothesis: Human evolution progressed through both anagenesis and cladogenesis. Results: The data collected supports my hypothesis in that evolution of humans occurred through cladogensis and anagenesis. From the graph of cranial size, the line grows in a linear fashion, when allowing for mistakes in measurements to be made. Seeing as how the cranial size grew over time, I can conclude that this supports anagenesis because the cranial size grew with the brain and intelligence capabilities. The graph of the facial projection shows that facial projection is very possibly caladogenesis. I came to this conclusion because starting with the Australopithecus afarensis, the facial production size decreased which shows evolution into what humans look like today. However there is another spike that goes the opposite way, which could
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Unformatted text preview: support the idea that there was another group of primates living in a separate area that can more obvious facial projections. Comparing species with regards to their foramen magnum ratio, the relationship between current species is quite clear. There is a linear relationship between modern day humans, chimpanzees, and gorillas. It is possible to draw a conclusion that human evolution progressed through anagenesis because of the linear relation through most of the human relatives. The shape of the chin and the canine to pre-molar ratio graphs are all over the place suggesting that the data is either very incorrect or the data shows cladogenesis since some of the species are semi-similar and some are not....
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This note was uploaded on 06/11/2008 for the course EBIO 1240 taught by Professor Basey,john during the Spring '08 term at Colorado.

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