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Related Experiment Videos

The evolution of animal microRNA function.

Ryusuke Niwa1, Frank J Slack

  • 1Department of Molecular, Cellular and Developmental Biology, KBT 936, Yale University, New Haven, CT 06520, USA.

Current Opinion in Genetics & Development
|February 24, 2007
PubMed
Summary
This summary is machine-generated.

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MicroRNAs (miRNAs) are small RNAs regulating genes in eukaryotes. Research suggests these gene regulators significantly impact animal evolution and development by driving phenotypic variation.

Area of Science:

  • Evolutionary biology
  • Genetics
  • Molecular biology

Background:

  • MicroRNAs (miRNAs) are small RNA molecules acting as negative gene regulators in eukaryotes.
  • Each miRNA can target hundreds of genes, influencing numerous biological processes and genetic pathways.
  • Evidence suggests miRNAs play roles beyond ontogeny, potentially impacting animal phylogeny.

Purpose of the Study:

  • To explore the role of microRNAs in animal evolution.
  • To investigate the association between miRNA repertoire expansion and major evolutionary innovations.
  • To understand how miRNAs drive phenotypic variation during development.

Main Methods:

  • Bioinformatic analysis of miRNA targets.
  • Phylogenetic analysis of miRNA conservation and diversity.

Related Experiment Videos

  • Comparative genomics studies.

    • Main Results:

    • miRNA regulatory networks are extensive, influencing a vast array of biological functions.
    • The expanding repertoire of miRNAs correlates with significant evolutionary events, including body-plan innovations.
    • miRNA diversity is linked to phenotypic variation in closely related species.

    Conclusions:

    • MicroRNAs are crucial regulators with profound implications for animal evolution.
    • miRNAs contribute to evolutionary novelty and diversification by influencing developmental pathways.
    • Understanding miRNA evolution provides insights into the genetic basis of phenotypic variation.