NEUTRAL THEORY of EVOLUTION

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Amounts of Genetic Variation ►When molecular techniques allowed scientists to measure genetic variation in proteins they found 1) many polymorphic loci, and 2) including some with many alleles. ►The amount of genetic variation was much greater than scientists expected from the population genetic models that existed. ►Selection models were ‘tweaked’,, but …. Exam 2 Lecture 8 UIC BioS 101 Nyberg 4
New Idea ►The neutral theory of evolution developed by Motoo Kimura (1 st publication 1968). ►The neutral theory departed from all existing models by using N, , the population size, as the most important population parameter. ►What is the neutral theory of evolution? Exam 2 Lecture 8 UIC BioS 101 Nyberg 5
Page 1 and 2: GENETIC DRIFT & NEUTRAL THEORY of E
Page 3: Natural Selection view of Evolution
Page 7 and 8: Genetic drift ►Let the frequency
Page 9 and 10: GENETIC DRIFT in populations differ
Page 11 and 12: The Neutral Theory ► 1) There are
Page 13 and 14: Rate of loss of genetic variation i
Page 15 and 16: Losses and gains of polymorphism
Page 17 and 18: Probability of eventual fixation of
Page 19 and 20: Neutral Theory recapitulation ►Mo
Page 21 and 22: Geographic structure & migration

NEUTRAL THEORY of EVOLUTION

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