NS101 Darwinian Synthesis

NS101 Darwinian Synthesis - NS101 Darwinian Synthesis...

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24/09/2007 09:59:00 Reaction to Darwin’s book Problems with Darwin’s model Evidence for Evolution Biogeography distribution Fossil record Comparative Natural Selection Darwin’s observations Individual variation Struggle for existence Due to over-reproduction Differential reproductive success Future generations fewer faulty traits in young o Natural selection with vast amounts of time will lead to new species from common ancestors – the next generation may look different o Core theme of biology: combines the unit of life (e.g. DNA, macromolecules) and biodiversity o “Nothing in biology makes sense except in the light of evolution” – Dobzhansky Evolution by Natural Selection seems… Evolution by accident o Just happened in nature No determinism, no teleology in Darwin’s model – Lamarck required Yet it seems as if more complex organisms arise from more simple ones – complexity is increasing all the time Larmark – individuals seek more complexity And where did unique structures, like wings, come from? Gradual change? Problems with Darwin’s Model
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This note was uploaded on 04/16/2008 for the course NS 101 taught by Professor Schoch during the Fall '07 term at BU.

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NS101 Darwinian Synthesis - NS101 Darwinian Synthesis...

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