Michael Short Anthro 7 week 3

Michael Short Anthro 7 week 3 - created by partial genetic...

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Michael Short 01-19-11 Week 3 Anthro 7 HW Answers 1. a) The first explanation that could explain the similarity in the barks is the fact that sometimes two different species develop characteristics or traits that are similar but they do so separately. The example from the book described a similar trait between a chicken and human. The second explanation could be that they were once related and stemmed into two different species after developing the trait of prickly bark. b) The first explanation is substantial in explaining how the bark from yuccas can be prickly even with descendency from grass due to the fact that characteristics and traits of plants and animals can develop separately. 2.When looking at whether cryptic species can be explained by parapatric speciation, it makes sense due to the fact that parapatric speciation argues that a new species can be
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Unformatted text preview: created by partial genetic isolation. When looking at sympatric speciation this can explain the new creation of species by the contending the fact that sympatric speciation says it is possible to create a new species through heavy gene flow. Finally allopatric speciation could account for the creation of a new species only if a physical barrier initially isolates part of the population allowing for that portion of the population to diverge and in doing so create a brand new species. 3.You would help these extraterrestrial scientists identify the primate order by showing them the hierarchal tree of primates that is shown in the book. This tree structure shows the hierarchal descent of primates from an earlier unknown ancestor....
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