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BIOL 121 Lecture Notes - Convergent Evolution

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blushmule307
6 Apr 2012
School
UBC
Department
Biology
Course
BIOL 121
Professor
Carol Pollock

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BIOL 121 Full Course Notes
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BIOL 121 Full Course Notes
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Document Summary

The theory of evolution has not been proven but it has not yet been disputed, therefore it is the best theory we have to date. Evidence for darwin"s theory, the decent with modification: species can change through time. Past organisms: fossil records imprints of organisms in the rock stratum (each stratum represents a geological time era), usually the hard parts of organisms are left behind (ex. *through these tests the earth has been determined to be ~4. 6 billion years old. *it is estimated that life first emerged ~3. 5bya: extinctions species that were once here and are no longer here. Darwin explains that this is because species can change over time. Present day organisms: vestigial traits traits seen on the organism that serves no purpose (ex. *homology: stuctural homology: the structure is inherited from a previous ancestor, developmental homology: the structure of embryos, genetic homology:

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Related Questions

What is the statement for the Theory of Evolution, and does this statement include a description of the evolution of humans or other organisms? If you answer is no, then explain 1) how the Theory of Evolution is related to evolutionary lineages of humans and other organisms and 2) why it is appropriate to teach the Theory of Evolution. If your answer is yes, then 1) provide the definition of a Scientific Theory (as provided in lecture) versus hypothesis and 2) analyze the evidence supporting or refuting both the Theory of Evolution and the evolution of humans or other organisms.

BIO W1A3: Darwin's Theory

The minimum length for this assignment is 1,200 words.

Darwin was not the first to consider evolution as a process but he did come up with the first effective explanation for how it happens. Describe DarwinĆ¢Ā€Ā™s theory of evolution by natural selection. Explain how this theory was a major advance over prior ideas as to how organisms changed over time. Give evidence in support of evolution and describe the driving forces for evolutionary change.

Darwin was not the first to consider evolution as a process but he did come up with the first effective explanation for how it happens. Describe Darwin's theory of evolution by natural selection. Explain how this theory was a major advance over prior ideas as to how organisms changed over time. Give evidence in support of evolution and describe the driving forces for evolutionary change.