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Bio 201 S10 Lect 2 (True) v2r

Bio 201 S10 Lect 2 (True) v2r - todaysfactoid...

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today’s factoid Ant mega‐colony taking over world Large colonies of the ant Argen9ne ant ( Linepithema humile ) in Europe, the US, and Japan act as if they are all members of a single colony based on lack of aggression in experiments likely reflects gene9c rela9onships, but this has not been tested yet Like from a single original colony that has been transported around the world by humans see story posted in Biology in the News folder on Blackboard http://news.bbc.co.uk/earth/hi/earth_news/ newsid_8127000/8127519.stm
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4 th Undergraduate TA Andrew Kathriner e‐mail (and soon, office hours) posted in Staff informa9on on Blackboard UGTAs meet today at my office hours More on extra credit assignment on Friday do not submit .docx file format .doc, .pdf, .txt all OK
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Message boards in Bio 201 Blackboard forum
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Message boards in Bio 201 Blackboard forum
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Message boards in Bio 201 Blackboard forum
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Message boards in Bio 201 Blackboard forum
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How fossils are dated History of Life on Earth: beginnings Chemical EvoluAon (pre‐bioAc) Origin of Life Biological EvoluAon EvoluAon of Ecosystems Origin and EvoluAon of Life on Earth
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Most evidence of this history of life comes from the fossil record Fossil cicada from the lower Cretaceous (~130‐145 mya)
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How do we date fossil evidence? Rela9ve: fossils occur in sedimentary rocks Older rocks occur below younger rocks Geologic forma9ons of various ages are recognized, and o^en named, by the fossils they contain
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