BIO 465 Lecture Notes - Lecture 8: Lactose Intolerance, Population Bottleneck, Lactase

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22 Mar 2018
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If environment changed and it was useful again it would come back two step process. If lost then there are no individuals with and you are waiting for a very specific mutation. Different mutations can cause the same phenotypic trait. How many genotypic differences are there in olsen"s grandkids vs him or lactase production? (cid:401)! Different pops change diverge over time: special circumstances of drift: Population bottleneck = significant narrowing of the gene pool in the populations; dropping in size. In terms of drift, drift works better on smaller size: when you drop very quickly, act of dropping itself, can cause sampling error = drift, sampling error = drift, evolution = change in allele frequency.

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