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How to Create and Use Binocular Rivalry
14:34

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Published on: November 11, 2010

When two is better than one.

Courtney C Babbitt1, Ralph Haygood, Gregory A Wray

  • 1Institute for Genome Science and Policy, Duke University, Box 90338, Durham, NC 27708-0338, USA.

Cell
|October 25, 2007
PubMed
Summary
This summary is machine-generated.

Gene duplication provides a pathway for adaptation. Hittinger and Carroll (2007) show that changes in both gene regulation and protein sequences after duplication can resolve conflicts and boost organism fitness.

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Area of Science:

  • Evolutionary biology
  • Genetics

Background:

  • Gene duplication and divergence are recognized mechanisms driving evolutionary adaptation and phenotypic change.
  • Previous research has suggested gene duplication's role in evolution, but direct evidence linking it to resolved adaptive conflicts was limited.

Purpose of the Study:

  • To provide the first clear example of adaptations occurring in both regulatory and protein-coding regions following gene duplication.
  • To demonstrate how such dual adaptations can resolve an adaptive conflict, thereby increasing organismal fitness.

Main Methods:

  • The study by Hittinger and Carroll (2007) likely involved comparative genomics and functional analyses to identify and characterize gene duplicates and their associated changes.
  • Analysis focused on identifying alterations in both the regulatory elements controlling gene expression and the protein-coding sequences themselves.

Main Results:

  • The research identified a specific instance where gene duplication led to significant adaptations in both regulatory and protein-coding regions.
  • This dual adaptation successfully resolved a previously existing adaptive conflict within the organism.

Conclusions:

  • Gene duplication, coupled with simultaneous adaptations in regulatory and coding sequences, is a potent evolutionary mechanism.
  • This process can effectively resolve adaptive conflicts, leading to demonstrable increases in organismal fitness and evolutionary success.