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Lecture 2 - BILD 3 April 2 2008 SECTION SIGN-UP NOW...

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BILD 3 April 2, 2008 Woodruff: Agents of microevolution 1 1 SECTION SIGN-UP NOW AVAILABLE ON WebCT Schedule of Section Meetings B01 M 1:00p - 1:50p HSS 1305 B02 M 2:00p - 2:50p HSS 1305 B03 W 3:00p - 3:50p HSS 1305 B04 W 4:00p - 4:50p HSS 1305 B05 F 1:00p - 1:50p HSS 1305 B06 F 2:00p - 2:50p HSS 1305 B07 M 4:00p - 4:50p SOLIS 109 B08 M 5:00p - 5:50p SOLIS 109 B09 Th 4:00p - 4:50p CENTR 207 B10 Th 8:00a - 8:50a CENTR 203 B11 W 2:00p - 2:50p CENTR 207 B12 Th 2:00p - 2:50p CENTR 203 2 Bio 3 ORGANISMIC AND EVOLUTIONARY BIOLOGY INSTRUCTOR: David Woodruff SCHEDULE, SYLLABUS & ANNOUNCEMENTS: WebCT SITE WAIT LIST: CLASS IS OVERSUBSCRIBED WAIT LIST CLOSED Section meetings: SIGN-UP TODAY on WebCT FAQ: see the course WebCT site ASSIGNED READING FOR TODAY: CHAPTER 22 FOR FRIDAY: CHAPTER 23 3 CHAPTERS IN CAMPBELL 1 12 13 14 15 22 29 23 30 24 31 25 32 26 33 27 34 28 MIDTERM 1 APRIL 25 9:00 A.M. 50 53 51 54 52 55 MIDTERM 2 MAY 235 9:00 A.M. 49 part 51 34 part FINAL EXAM JUNE 11 8:00 A.M. ASSUMED NOTE CORRECTED DATES 4 LECTURE 2 - AGENTS OF EVOLUTIONARY CHANGE RESPONSES TO ENVIRONMENTAL CHANGES 1. AVOID 2. RESPOND 3. DO EXTINCT REGULATORY CHANGE PUPIL OF THE EYE, THERMOREGULATION ACCLIMATORY CHANGE SKIN TANNING, ALTITUDE DEVELOPMENTAL CHANGE PLANT PHENOTYPE, LOCUST PHASE EVOLUTIONARY CHANGE 5 EVOLUTION IS A FACT THE THEORY TO EXPLAIN EVOLUTIONARY CHANGE IS CALLED NEO-DARWINISM COMPRISING: CHARLES DARWIN’s THEORY OF NATURAL SELECTION (1858 paper & 1859 Origin of Species book) ALFRED RUSSELL WALLACE (1858 paper) and MENDELIAN HEREDITY 1866 (RE-DISCOVERED IN 1901) POPULATION GENETICS (FISHER, HALDANE, WRIGHT IN 1920’s) and THE MODERN SYNTHESIS (1940’s): paleontology, biogeography, behavior, sociobiology, anatomy, morphology, development, molecular genetics (since 1960’s). EVOLUTION REPLACED CREATIONIST HYPOTHESES 6 EVOLUTIONARY CHANGE CHANGE IN ALLELE FREQUENCY IN A POPULATION NOT REALLY CHANGE IN GENE FREQUENCY GENETIC CHANGE OCCURS IN INDIVIDUALS AND EFFECTS THEIR REPRODUCTIVE FITNESS AND THE FREQUENCY OF FAVORED ALLELES IN POPULATIONS. MAY LEAD TO ADAPTATION MAY LEAD TO SPECIATION
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BILD 3 April 2, 2008 Woodruff: Agents of microevolution 2 7 DARWIN 1875, AGE 66 MOMENTOUS SCIENTIFIC REVOLUTION SPRANG FROM INSIGHTS HE GATHERED IN THE GALAPAGOS. 8 HMS BEAGLE: 90 FT, 74 MEN, 4 YEARS, CAPT. FITZROY DARWIN: 22 YRS OLD WHEN HE SAILED. 9 THE OBSERVATION OF RELATED BUT DIFFERENT FORMS OF MOCKINGBIRDS ON DIFFERENT ISLANDS IN AN ARCHIPELAGO UNDERMINES THE STABILITY OF SPECIES THE TRADITIONAL IDEA THAT SPECIES ARE FIXED CREATIONS. (DARWIN, 1836) 10 HERE IN THE GALAPAGOS WE SEEM TO BE BROUGHT NEAR TO THAT GREAT MYSTERY OF MYSTERIES THE FIRST APPEARANCE OF NEW SPECIES ON EARTH DARWIN (1845) 11 GALAPAGOS OR DARWIN’S FINCHES
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