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Variation and Evolution in Plants and Microorganisms Toward a New Synthesis 50 Years After Stebbins (2000) / Chapter Skim
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Part III: Protoctist Models
Pages 115-116

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From page 115...
... One consists of the precise insertion or deletion of U residues, so as to produce open reading frames in the messenger RNAs encoded in the organelle DNA known as the maxicircle. The other editing system is a modification of 34 C's into 34 U's in the anticodon of transfer RNA molecules that thus can decode the UGA stop codon as tryptophan.
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From page 116...
... falciparum. The antigenic polymorphisms come about rapidly by mass natural selection acting on sequence variations originated at high rates by intragenic recombination of short DNA repeats.
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Key Terms

  • reading frames
  • transfer rna
  • synonymous nucleotide
  • organelle dna
  • messenger rnas

  • world populations
  • natural selection
  • messenger rna
  • diverse genes
  • nucleotide polymorphisms

  • precise insertion
  • short dna
  • recent evolution
  • computer simulations
  • authors elaborate

  • dna repeats
  • rna molecules
  • intragenic recombination
  • mass natural
  • sequence variations

  • unique evolutionary
  • malignant malaria
  • evolutionary origin
  • summarize data
  • antigenic genes

  • variations originated
  • uga stop
  • antigenic polymorphisms
  • selection acting
  • evolutionary scenario


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