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Tempo and Mode in Evolution Genetics and Paleontology 50 Years After Simpson (1995) / Chapter Skim
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Patterns
Pages 251-252

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
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From page 251...
... Lenski and Michael Travisano, in Chapter 13, show that in new but constant environments evolution occurs rapidly during the first 2000 generations, slowly during the following 3000, and not at all over the last 5000. They have 12 separate populations derived from identical ancestors and evolving in identical environments, but their trajectories are different in both morphology and fitness.
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From page 252...
... The method relies on the sequential composition of chromosomes, a premonition of the molecular methods that rely on the sequential composition of the DNA. The third chromosome of Drosophila pseudoobscura exhibits a rich polymorphism with more than 40 alternatives.
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Key Terms

  • fruit fly
  • drosophila pseudoobscura
  • drosophila species
  • drosophila melanogaster
  • identical environments

  • molecular methods
  • evolution occurs
  • aleksandar popadic
  • mapping human
  • chance events

  • occurs rapidly
  • chromosomal elements
  • third chromosome
  • human chromosomes
  • fly drosophila

  • pseudoobscura exhibits
  • michael travisano
  • method relies
  • fragment included
  • identical ancestors

  • dna fragment
  • constant environments
  • environments evolution
  • separate populations
  • nucleotide sequence

  • physical map
  • adaptive evolution
  • dna fragments
  • populations derived
  • events play


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