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li5504552
Joined: 20 Jun 2007
Posts: 64
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 Posted: Sat Jul 14, 2007 3:13 am Post subject: Evolution |
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| Can you please clarify for me what the difference is between a bottleneck, genetic drift, and founders effect? Thanks. |
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admin
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Joined: 08 Dec 2003
Posts: 2176
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| Posted: Sat Jul 14, 2007 4:19 pm Post subject: |
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This is the kind of information that should only be studied if you are scoring 14's in biological sciences and you have lots of extra time! Genetic drift (random change in the genetic make up of a popn due to chance) may possibly come up, but founders and bottleneck, well, let your experience teach. Do the 8 AAMC practice tests and see how often that would be mentioned based on previous knowledge. Never. Master the topics which actually come up on the MCAT rather than those topics which, in theory, might show up on one question out of 52 every few years. It is better to spend the time to chase a 90% than to chase a few percentage points that almost never show up.
Just in case you are chasing 100%:
http://evolution.berkeley.edu/evosite/evo101/IIID3Bottlenecks.shtml |
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