Lec1 and 2

Lec1 and 2 - 1/3/10 1 1 EVE 100 Introduction to Evolution...

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Unformatted text preview: 1/3/10 1 1 EVE 100 Introduction to Evolution Instructor: David Begun djbegun@ucdavis,edu TAs: Jon Haloin Pat McIntyre Email to Instructor or TAs should have EVE100 in the subject line Web site - http://www.eve.ucdavis.edu/djbegun/ It is interesting to contemplate a tangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects Fitting about, and with worms crawling through the damp earth, and to reFect that these elaborately constructed forms, so di f erent from each other, and dependent upon each other in so complex a manner, have all been produced by laws acting around us. rom the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows. There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the xed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved. C. Darwin 2 Course Basics Syllabus on course web site Two midterms ( 25% each); fnal ( 35% ) Study questions, review sessions Discussion Sections Read research papers Questions From lecture and From papers- hand in to TA BEORE section- we will grade one or two oF the questions ( 15% ) Exam questions From research papers This course takes a genetical perspective on evolution Memorization not as important as evolutionary thinking 1/3/10 2 3 What is Evolution? 1. Genetic changes in populations of organisms over time.- Gene frequency changes from one generation to another.- Populations evolve. Individuals do not evolve. 2. Descent with modiFcation igure from Origin of Species 4 What are the goals of evolutionary biology? 1. Reveal the mechanisms of evolution- natural selection, genetic drift 2. Explain variation within species 3. Reveal how evolution leads to adaptation 4. Explain how population divergence leads to speciation 5. Reveal the history of life 6. Explain the origin, timing, and distribution of traits among species 7. Integrate insights from evolution into all of biology 1/3/10 3 5 Evolution: fact or theory? 6 Why study Evolution? 1. Its interesting 2. Nothing in biology makes sense except in the light of evolution - Th. Dobzhansky 3. It has practical importance 1/3/10 4 7 Disease origin and transmission Three independent derivations of human HIV-1 infection (worldwide)from chimps Molecular clock estimate is 1930s Four independent derivations of human HIV-2 infection (W. Afr.) from sooty mangabeys Fut. 22.3 8 Predicting inuenza outbreaks Bold lines equal surviving lineages Dots are lineages with unusually high rates of evolution Common strains in 1997 derived from unusually rapidly evolving strain in 1994 Fut. 22.2 1/3/10 5 9 Survey of rod-like microbes in subgingival crevice...
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This note was uploaded on 01/14/2010 for the course EVE 100 taught by Professor Kopp during the Spring '08 term at UC Davis.

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Lec1 and 2 - 1/3/10 1 1 EVE 100 Introduction to Evolution...

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