Evolution__3rd_Edition

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.. in Sexual Reproduction 12Adaptations T his chapter mainly concentrates on three related research questions: the questions of how sex, sex differences, and sex ratios are adaptive. Biologists do not understand why sexual, as opposed to asexual, reproduction exists and we look at four hypotheses a genetic constraint, group selection, deleterious mutation, and parasite–host coevolution. Once sex had evolved, natural selection favored different sets of adaptations in males and females. The theory of sexual selection aims to explain male–female differences. We look at female choice for bizarre male traits, such as the peacock’s tail, and at evolutionary conflicts between the sexes. Thirdly, we turn to the sex ratio (the ratio of males to females). The sex ratio is one of the best understood adaptations, and we look at a recent study of a successfully predicted deviation from a 50 : 50 sex ratio in a bird species with helpers at the nest.
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.. EVOLUTION
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© 2004 by Blackwell Science Ltd a
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vi Brief Contents PART 5. MACROEVOL
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viii Full Contents 3.5 Ring “spec
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x Full Contents 7.2 Rates of molecu
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xii Full Contents 10.5 Genetics of
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xiv Full Contents PART 4. EVOLUTION
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xvi Full Contents 14.12 Identificat
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xviii Full Contents 17.7 Geographic
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xx Full Contents 21.4.3 Ordovician
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Preface The theory of evolution is
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xxiv Preface evolve resistance to d
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.. Introduction Part one When Darwi
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4 PART 1 / Introduction Evolution i
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6 PART 1 / Introduction Examples ex
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8 PART 1 / Introduction Time (a) (b
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10 PART 1 / Introduction . . . look
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12 PART 1 / Introduction Time (a) (
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14 PART 1 / Introduction Figure 1.7
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18 PART 1 / Introduction . . . and
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20 PART 1 / Introduction Further re
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22 PART 1 / Introduction DNA is car
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24 PART 1 / Introduction Most genes
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26 PART 1 / Introduction Table 2.1
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28 PART 1 / Introduction Original D
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30 PART 1 / Introduction (a) Transp
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32 PART 1 / Introduction . . . per
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34 PART 1 / Introduction Dominance
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Figure 2.11 Two populations with 10
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42 PART 1 / Introduction Study and
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44 PART 1 / Introduction Life could
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48 PART 1 / Introduction Tooth qual
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50 PART 1 / Introduction Artificial
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52 PART 1 / Introduction Ring speci
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54 PART 1 / Introduction Human obse
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58 PART 1 / Introduction 5' pG Anti
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62 PART 1 / Introduction (a) α-hem
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64 PART 1 / Introduction Age (Myr a
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66 PART 1 / Introduction The groups
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68 PART 1 / Introduction The scient
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70 PART 1 / Introduction Study and
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Plate 3 Here in the lower row are s
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Plate 6 Scrub jays (Aphelocoma coer
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Plate 8 Chromosomal races of the ho
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Plate 10 Geological map of North Am
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72 PART 1 / Introduction Cod produc
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74 PART 1 / Introduction The strugg
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76 PART 1 / Introduction Many chara
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82 PART 1 / Introduction Chromosome
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86 PART 1 / Introduction The condit
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90 PART 1 / Introduction Summary 1
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.. Evolutionary Genetics Part two T
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.. 5 The Theory of Natural Selectio
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.. Figure 5.1 The general model of
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.. . . . and use Mendel’s rules t
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.. A simpler proof of the Hardy- We
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.. The MN human blood group system
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.. CHAPTER 5 / The Theory of Natura
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.. We need to know more to understa
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.. Figure 5.4 Peppered moths natura
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.. Mark-recapture experiments sugge
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.. Manchester The fitness estimates
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.. Pests, such as mosquitoes, evolv
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.. Figure 5.8 The mortality of mosq
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.. Box 5.2 Resistance Management Th
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.. Other factors will be at work in
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.. . . . which can sometimes be use
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.. Figure 5.9 The global incidence
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.. In host-parasite relations, the
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.. Populations may be subdivided CH
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.. We construct a model of gene fre
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.. We construct a model of selectio
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.. Further reading CHAPTER 5 / The
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.. 6 Random Events in Population Ge
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.. Box 6.1 Random Sampling in Genet
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.. Probability of polymorphism 1.0
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.. Evolution can occur by random dr
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.. Random drift has consequences fo
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.. Generation 1 Generation2 Adults
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.. CHAPTER 6 / Random Events in Pop
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.. Heterozygosity ( H ) 1.0 0.9 0.8
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.. Summary 1 In a small population,
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.. 7 Natural Selection and Random D
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.. Two extreme views b selectionist
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.. The original neutral theory has
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.. . . . and levels of polymorphism
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.. homozygotes by normal Mendelian
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.. Amino acid differences 1.0 0.9 0
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.. Globin evolution in “living fo
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.. Long-generation species, e.g., w
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.. Observed heterozygosity 1.0 0.8
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.. The nearly neutral theory can ex
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.. Insulin illustrates the effect o
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.. CHAPTER 7 / Natural Selection an
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.. Biologists came to accept, throu
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.. Elevated dN/dS ratios are observ
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.. Box 7.4 Model Organisms for Biom
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.. But the test has proved illumina
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.. Evidence shows that synonymous c
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.. The genomic era is allowing new
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.. Summary 1 The neutral theory of
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.. Study and review questions 1 Dra
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.. The tiger swallowtail butterfly
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.. Mimicry requires the correct com
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.. A haplotype is a haploid combina
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.. Linkage disequilibrium ( D) r =
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.. The more complex multilocus mode
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.. Expected frequency ( piqi ) (a)
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.. A model of haplotype frequency c
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.. Evidence for linkage disequilibr
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.. (proportion of polymorphic sites
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.. CHAPTER 8 / Two-locus and Multil
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.. Adaptive topographies can be use
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.. Mean population fitness ( w ) -
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.. p' 0 1 0 Frequency of A allele S
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.. Study and review questions 1 Her
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.. Beak size influences feeding eff
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.. Population size Seed √depth ×
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.. Continuous characters are influe
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.. Genetic and environmental influe
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.. Several non-additive genetic fac
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.. Box 9.1 Some Statistical Terms U
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.. Parent-offspring similarity depe
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.. Frequency Frequency Generation 1
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.. New variation can be introduced
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.. (a) 1976-1977 (b) 1981-1982 (c)
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.. Figure 9.11 (a) The main veins i
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.. Certain non-linear relations can
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.. Behavior Physiology Life history
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.. Some heritable characters do not
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.. Further reading CHAPTER 9 / Quan
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.. Adaptation and Natural Selection
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.. 10Adaptive Explanation T his cha
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.. . . . factually, ... . . . or th
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.. Not all evolution is adaptive CH
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.. Figure 10.2 Stages in the evolut
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.. Some critics suggest that the in
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.. Box 10.1 Molecular Cooption The
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.. Fitness (a) (b) Small mutation L
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.. Figure 10.5 A cross between the
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.. . . . by experiment, ... . . . a
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.. Figure 10.6 The fruits of (a) Cr
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.. Heterozygous advantage may lead
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.. Figure 10.7 Developmental asymme
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.. . . . that can be tested between
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.. Fitness (a) Time 1 (b) Time 2 (c
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.. Fitness Fitness (a) Time 1 (c) T
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.. Imperfect adaptations may or may
Page 642: .. The “design” of an eye for s
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Page 650: .. Study and review questions 1 Wha
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Page 658: .. The sd gene gains an advantage f
Page 662: .. CHAPTER 11 / The Units of Select
Page 666: .. We define Hamilton’s rule Hami
Page 670: .. Kin selection is at work in this
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Page 678: .. Box 11.1 Group Selection for Egg
Page 682: .. The unit of selection, in a seco
Page 686: .. * * The word “gene” is being
Page 690: .. Summary 1 Adaptations evolve by
Page 696: 314 PART 3 / Adaptation and Natural
Page 720: Frequency Frequency Frequency Frequ
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338 PART 3 / Adaptation and Natural
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.. Evolution and Diversity Darwin c
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.. Concepts and Intraspecific Varia
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.. CHAPTER 13 / Species Concepts an
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.. Time Vertical species concept Sp
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.. Species may be defined ecologica
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.. . . . and there are other, moder
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.. . . . that has been shown by rec
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.. We have good evidence of geograp
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.. Geographic variation in mice chr
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.. In a stepped cline, the gradient
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.. Box 13.2 Human Variation and Hum
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.. Figure 13.7 Character displaceme
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.. Polytypic species have diverse p
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.. (a) (b) (c) Gave de Pau Gave d
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.. Ecological factors can influence
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.. Biological species are real, not
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.. Biologists disagree about how re
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.. CHAPTER 13 / Species Concepts an
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.. 14Speciation S peciation means t
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.. (a) Space (b) (c) Time Geographi
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.. Figure 14.2 Prezygotic isolation
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.. Figure 14.3 Song form may be ple
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.. Could postzygotic isolation evol
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.. Hybrid fitness is influenced by
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.. Diploid genotype Gene duplicatio
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.. . . . in exceptional conditions
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.. Fitness of hybrid offspring Fitn
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.. Speciation often occurs as a byp
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.. The theory of reinforcement has
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.. Less interbreeding between speci
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.. . . . but also open to alternati
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.. Figure 14.11 Hybrid speciation b
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.. Reinforcement works in sympatry
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.. Most hybrid zones are due to sec
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.. Phylogenetic tests for sympatric
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.. This is a “hot topic” The Od
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.. Biologists are interested in the
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.. Summary 1 The evolution of a new
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.. CHAPTER 14 / Speciation 421 On r
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.. Reconstruction of Phylogeny 15Th
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.. Shared characters are used to in
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.. Figure 15.2 Character conflict i
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.. Figure 15.4 Convergence in marsu
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.. We distinguish ancestral from de
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.. Figure 15.7 Shared characters di
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.. Parsimony underlies outgroup com
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.. Protein and DNA sequences have b
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.. Molecular phylogenetics uses sta
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.. Figure 15.11 Distance methods. (
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.. Percentage difference in DNA of
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.. When two species are very differ
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.. Figure 15.15 The same character
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.. Variable evolutionary rates upse
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.. Ribosomal RNA genes are widely u
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.. The number of possible trees can
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.. . . . as happened in one study o
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.. Evolutionary time Species 1 Orth
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.. The root of a tree ... . . . can
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.. Figure 15.24 The rooted angiospe
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.. The fossil characters were reint
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.. Figure 15.27 Phylogeny of 103 sp
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.. Summary 1 Phylogenies show the a
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.. Study and review questions 1 Her
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.. 16Classification and Evolution B
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.. Phenetic classification is nonev
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.. CHAPTER 16 / Classification and
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.. (a) Phenetic measurements for fi
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.. Distance can be measured in more
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.. Cladism admits only monophyletic
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.. Phylogenetic classification face
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.. Evolutionary classification admi
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.. Classification 1 Classification
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.. Other factors are probably at wo
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.. Study and review questions 1 Mat
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.. Figure 17.1 The natural distribu
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.. Figure 17.2 (a) The six main fau
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.. Dispersal is enabled by various
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.. Many species show similar geneti
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.. Figure 17.4 (b) The three major
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.. Fruitflies and lizards show a co
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.. Plate tectonics causes vicarianc
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.. Time Biogeographic distribution
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.. Figure 17.11 Testing vicariance
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.. (b) Five other vertebrate groups
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.. . . . and South American mammals
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.. CHAPTER 17 / Evolutionary Biogeo
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.. The Great American Interchange i
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.. CHAPTER 17 / Evolutionary Biogeo
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.. Macroevolution Part five Part 5
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.. 18The History of Life T his chap
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.. Geological maps show the locatio
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.. CHAPTER 18 / The History of Life
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.. Time (Myr BP) 0.5 1.0 2.0 3.0 4.
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.. Figure 18.3 Around 2-3 billion y
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.. . . . partly by symbiosis Atmosp
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536 PART 5 / Macroevolution Protost
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538 PART 5 / Macroevolution Plants
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540 PART 5 / Macroevolution Some ma
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542 PART 5 / Macroevolution The amn
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544 PART 5 / Macroevolution Figure
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546 PART 5 / Macroevolution Changes
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548 PART 5 / Macroevolution Myr ago
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550 PART 5 / Macroevolution Genetic
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554 PART 5 / Macroevolution Further
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19Evolutionary Genomics T he comple
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558 PART 5 / Macroevolution Some hu
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560 PART 5 / Macroevolution Molecul
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562 PART 5 / Macroevolution Superfl
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564 PART 5 / Macroevolution (a) Gen
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568 PART 5 / Macroevolution Transpo
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570 PART 5 / Macroevolution Summary
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Developmental Biology 20Evolutionar
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580 PART 5 / Macroevolution The Hox
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582 PART 5 / Macroevolution The num
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584 PART 5 / Macroevolution Mouse C
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586 PART 5 / Macroevolution A gene
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21Rates of Evolution E volutionary
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592 PART 5 / Macroevolution Time (M
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594 PART 5 / Macroevolution Table 2
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596 PART 5 / Macroevolution . . . a
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598 PART 5 / Macroevolution (a) 5 B
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602 PART 5 / Macroevolution Apparen
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606 PART 5 / Macroevolution Discret
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612 PART 5 / Macroevolution Further
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616 PART 5 / Macroevolution Full ev
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620 PART 5 / Macroevolution . . . o
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622 PART 5 / Macroevolution One stu
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624 PART 5 / Macroevolution Box 22.
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626 PART 5 / Macroevolution Table 2
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628 PART 5 / Macroevolution Nematod
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630 PART 5 / Macroevolution The cop
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634 PART 5 / Macroevolution Carnivo
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638 PART 5 / Macroevolution Number
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640 PART 5 / Macroevolution Coevolu
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642 PART 5 / Macroevolution Study a
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644 PART 5 / Macroevolution Adaptiv
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646 PART 5 / Macroevolution Extinct
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648 PART 5 / Macroevolution . . . b
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Tertiary Lower Danian Cretaceous Up
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652 PART 5 / Macroevolution The ast
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654 PART 5 / Macroevolution 10 6 ye
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656 PART 5 / Macroevolution Extinct
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658 PART 5 / Macroevolution Darwin
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660 PART 5 / Macroevolution (a) Ext
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664 PART 5 / Macroevolution Hansen
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666 PART 5 / Macroevolution Taxa wi
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668 PART 5 / Macroevolution Fossil
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670 PART 5 / Macroevolution One gro
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672 PART 5 / Macroevolution Molecul
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674 PART 5 / Macroevolution Changes
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676 PART 5 / Macroevolution . . . o
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680 PART 5 / Macroevolution (2002),
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Glossary Words in italics cross-ref
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684 Glossary individuals, such as p
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686 Glossary isolating mechanism An
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688 Glossary random drift Synonym o
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Answers to Study and Review Questio
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692 Answers to Study and Review Que
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700 References Arnold, M.L. (1997).
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702 References Briggs, D.E.G. & Cro
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704 References Clarke, C.A., Sheppa
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706 References Dietl, G.P., Alexand
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708 References Flynn, J.J. & Wyss,
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710 References Grant, P.R. & Grant,
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712 References Hey, J. (2001). Gene
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714 References Jeffreys, A.J., Royl
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716 References Kruuk, L.E.B., Meril
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718 References MacFadden, B.J. (199
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720 References Milinkovitch, M.C.,
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722 References Orr, H.A. (1998). Th
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724 References Rice, W.R. (2002). E
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726 References Sequeira, A.S., Lant
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728 References Surlyk, F. & Johanse
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730 References Vrba, E.S. (1993). T
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732 References Wright, S. (1977). E
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734 Index angiosperms (cont.): inse
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736 Index coloration (cont.): prezy
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738 Index evolution (cont.): long-t
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740 Index genetics (cont.): charact
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742 Index immunoglobulins 24 immuno
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744 Index molecular distance 440-2
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746 Index parasites (cont.): genome
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748 Index reproductive development
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750 Index synonymous changes (cont.
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