Lecture Notes June 24 - -Theory of evolution- change...

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-Theory of evolution- change through ancestral modification; process is through natural selection -Natural selection- struggle for existence and of the fittest -Struggle of the fittest- there are heritable traits that make some more “fit” to pass on genes; there’s a variation of traits -population changes through time, not the individual Microevolution -population is both a pattern and a process - pattern: species aren’t immutable (they do change over time); no eidos, only a mean pattern; share common ancestors -process: natural selection -fitness- an individual’s ability relative to others in the population to produce offspring in the next generation -Adaptation- any heritable trait that increases fitness Evidence for Evolution -many species have gone extinct -fossil sloths vs. present day sloths -sloths have changed through time -fossil record has transitional forms -whales from quadrupeds to whales - vestigial traits -erector pilli coccyx in homo sapiens -populations can be observed to change over time
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This note was uploaded on 09/15/2009 for the course BIOE 20c taught by Professor Marinovic during the Summer '09 term at University of California, Santa Cruz.

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Lecture Notes June 24 - -Theory of evolution- change...

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