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 Staf inForma9on on Blackboard UGTAs meet today at my office hours More on extra credit assignment on ±riday do not submit .docx ²le 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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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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Bio 201 S10 Lect 2 (True) v2r - todaysfactoid...

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