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Chapter 17 Opener Two species that can hybridize
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Figure 17.1 Three closely related birds
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Figure 17.2 An example of sympatric hybridization
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Figure The fraction of named species that represent reproductively independent lineages in several major groups of plants and animals Evolution-2e-Fig jpg
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Figure The phylogeny of some species and populations in the moth genus Greya, based on mitochondrial DNA sequence data Evolution-2e-Fig jpg
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Figure The phylogeny of some species and populations in the moth genus Greya, based on mitochondrial DNA sequence data Evolution-2e-Fig R.jpg
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Figure Oscillograms of the songs of three morphologically indistinguishable species of green lacewings (Chrysoperla) Evolution-2e-Fig jpg
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Figure Secondary sexual characteristics, such as bright color patterns and elaborate crests and tail feathers, vary greatly among male hummingbirds Evolution-2e-Fig jpg
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Figure 17. 7 (A) Mimulus lewisii is typical of bee-pollinated flowers
Figure (A) Mimulus lewisii is typical of bee-pollinated flowers. (B) F1 hybrid between M. lewisii and M. cardinalis. (C) M. cardinalis is typical of bird-pollinated flowers. (D–F) Some F2 hybrids Evolution-2e-Fig jpg
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Figure The posterior lobe of the genital arch in males of three closely related species of Drosophila Evolution-2e-Fig jpg
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Figure 17.9 An example of species distinguished by morphological characters
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Box 17B Diagnosis of a New Species: Ophraella slobodkini
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Figure The level of prezygotic or postzygotic reproductive isolation between pairs of populations and species of Drosophila, plotted against genetic distance (D) Evolution-2e-Fig jpg
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Figure The level of prezygotic or postzygotic reproductive isolation between pairs of populations and species of Drosophila, plotted against genetic distance (D) Evolution-2e-Fig R.jpg
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Figure The level of prezygotic isolation among allopatric and sympatric pairs of Drosophila populations, plotted against genetic distance (D) Evolution-2e-Fig jpg
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Figure The level of prezygotic isolation among allopatric and sympatric pairs of Drosophila populations, plotted against genetic distance (D) Evolution-2e-Fig R.jpg
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Figure 17. 12 Proportion of males with motile sperm in nonhybrid D
Figure Proportion of males with motile sperm in nonhybrid D. simulans and in backcross hybrids with various combinations of chromosome arms from D. simulans and D. mauritiana Evolution-2e-Fig jpg
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Figure 17. 12 Proportion of males with motile sperm in nonhybrid D
Figure Proportion of males with motile sperm in nonhybrid D. simulans and in backcross hybrids with various combinations of chromosome arms from D. simulans and D. mauritiana Evolution-2e-Fig R.jpg
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Figure 17.13 Gene interactions that cause sterility or inviability in hybrids between species
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Figure 17.13 Gene interactions that cause sterility or inviability in hybrids between species
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Figure (A) Five chromosomes of the jimsonweeds Datura stramonium and D. discolor, which differ by five reciprocal translocations Evolution-2e-Fig jpg
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Figure (A) Five chromosomes of two jimsonweed species, which differ by five reciprocal translocations. (B) Possible arrangement of these chromosomes in synapsis in an F1 hybrid Evolution-2e-Fig R.jpg
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Figure The distribution of four “races” of the mole-rat Spalax ehrenbergi with different chromosome numbers Evolution-2e-Fig jpg
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Figure The distribution of four “races” of the mole-rat Spalax ehrenbergi with different chromosome numbers Evolution-2e-Fig R.jpg
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Figure 17.16 The transition from genetic polyphyly to paraphyly to monophyly in speciation
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Figure 17.17 Incomplete lineage sorting results in a polyphyletic gene tree for the α-enolase locus
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Figure Expected patterns of variation in frequency of alleles or characters across a hybrid zone originating by (A) divergent selection and (B) secondary contact Evolution-2e-Fig jpg
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Figure Hybrid zone between (A) the fire-bellied toad and (B) yellow-bellied toad. (C) Allele frequencies at six diagnostic enzyme loci. (D) Frequencies of seven morphological characters Evolution-2e-Fig jpg
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Figure 17.19 The hybrid zone between (A) the fire-bellied toad and (B) the yellow-bellied toad
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Figure 17.19 (C) Average allele frequencies at six diagnostic enzyme loci
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Figure 17.19 (D) Average frequencies of seven morphological characters
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