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In the Light of Evolution Volume X: Comparative Phylogeography (2017) / Chapter Skim
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Part II: COMPARATIVE PHYLOGEOGRAPHY IN A GENOMIC SENSE
Pages 87-90

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From page 87...
... However, a long-appreciated fact is that these cytoplasmic genomes represent only a minuscule fraction of a species' total hereditary pedigree, the vast majority of which is ensconced in nuclear DNA. Early attempts to extract useful phylogeographic information from the nuclear genome met mostly with failure, due to technical difficulties coupled with sex-based genetic recombination.
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From page 88...
... By focusing attention on extreme demographic events (the occurrence of very large families in a pedigree, and on strong selective sweeps in the population's recent past) , the authors conclude that "only rather extreme versions of such events can be expected to structure population pedigrees in such a way that unlinked loci will show deviations from the standard predictions of population genetics, which average over population pedigrees." Rohan Mehta and colleagues (Chapter 6)
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From page 89...
... As empirically illustrated by the authors' comparative genetic research spanning diverse vertebrate taxa across northern Australia, the emerging discipline of phylogenomics will call for a greater appreciation of reticulation during the evolutionary process, both within genomes in the form of genetic recombination, and across populations and species in the forms of gene flow and introgression. In this important sense, the arenas of comparative phylogeography and interspecific phylogenetics can again be seen as lying along a conceptual continuum of historical evolutionary genetic phenomena, from population-level separations to deeper organismal divergences.
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Key Terms

  • gene flow
  • genetic recombination
  • nuclear genome
  • multiple loci
  • phylogeographic hypotheses

  • demographic events
  • technical difficulties
  • objective approach
  • current authors
  • generation sequencing

  • phylogeographic inferences
  • interspecific phylogenetics
  • population size
  • sister taxa
  • gene lineages

  • genetic studies
  • uniformly useful
  • reciprocally monophyletic
  • anna papadopoulou
  • extreme demographic

  • nonmodel species
  • estimate historical
  • focusing attention
  • population pedigrees
  • total hereditary

  • empirically illustrated
  • entail calculating
  • evolutionary models
  • technologies extract
  • extant species


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