BIOL 142 Chapter 20 Study Guide for TEST 1

BIOL 142 Chapter 20 - BIOL 142 Study Guide for TEST 1 These guides are intended to help you focus your time on the most important topics in each

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BIOL 142: Study Guide for TEST # 1 ** These guides are intended to help you focus your time on the most important topics in each chapter. I cannot guarantee that they include all information you will be tested on, but it definitely provides a good place to start. Make sure to study the topics reviewed here and understand all of the terms in bold. Chapter 20 – Genes within Populations Evolution = changes in allele frequencies in populations over time (= ‘descent with modification’) Hardy-Weinberg = proportions of genotypes (and alleles) found in a population will remain constant from generation to generation (i.e. NO evolution will occur) if 5 assumptions are met: - no mutation - no gene flow - random mating - large population (no genetic drift) - no selection Hardy Weingberg Equations: p + q = 1; p 2 + 2pq + q 2 = 1 (*see the document with more examples posted on BB for more practice using this equation) - p = frequency of dominant allele - q = frequency of recessive allele - p 2 = frequency of
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This note was uploaded on 09/18/2011 for the course BIO 142 taught by Professor Jarrell during the Spring '11 term at Delgado CC.

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BIOL 142 Chapter 20 - BIOL 142 Study Guide for TEST 1 These guides are intended to help you focus your time on the most important topics in each

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