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- evolutionary variations result from random mutations, being random genetic changes, followed by natural selection.
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- evolutionary variations result from random mutations, being random genetic changes, followed by natural selection.
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- #push [[systems view of evolution]]
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- #push [[systems view of evolution]]
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- recognizes three major avenues of evolution:
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- recognizes three major avenues of evolution:
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-
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- [[random mutations]] == [[genetic mutations]]
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- [[random mutations]] == [[genetic mutations]]
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- most mutations are harmful, few lead to positive variations
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- most mutations are harmful, few lead to positive variations
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- note that one bacteria can become [[billions]] in just one day
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- note that one bacteria can become [[billions]] in just one day
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@@ -70,8 +69,7 @@
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- hypothesis: long term [[symbiosis]] involving [[bacteria]] and other [[microorganisms]] as hosts/guests led to complex life
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- hypothesis: long term [[symbiosis]] involving [[bacteria]] and other [[microorganisms]] as hosts/guests led to complex life
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- [[acquiring genomes]]
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- [[acquiring genomes]]
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- compares organisms to [[corporations]]
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- compares organisms to [[corporations]]
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-
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- all three of the previous produce changes that need to be integrated into the physical and chemical environment; if the integration of new genetic information doesn't work, the organism can't survive -> there's natural selection
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- all three of the previous produce changes that need to be integrated into the physical and chemical environment; if the integration of new genetic information doesn't work, the organism can't survive
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- [[epigenetic network]]
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- [[epigenetic network]]
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- real life example: in human life you make plans (you have a plan for your night), plans need to adapt to
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- real life example: in human life you make plans (you have a plan for your night), plans need to adapt to random occurrences (people you run into; other events out of your sphere of control). evolution works the same way.
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- [[lecture 5]]
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- [[lecture 5]]
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