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  3. Functional Characterization Of Bat Limb Regulatory Elements.
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  3. Functional Characterization Of Bat Limb Regulatory Elements.

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Functional characterization of bat limb regulatory elements.

Aki Ushiki, Guy Kelman, Rory Sheng

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    |April 17, 2026

    View abstract on PubMed

    Summary
    This summary is machine-generated.

    Scientists explored the genetic basis of bat limb development, identifying key regulatory elements that influence unique traits like flight and hanging. This research reveals how small genetic changes contribute to specialized bat anatomy.

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    Area of Science:

    • Evolutionary Biology
    • Developmental Biology
    • Genomics

    Background:

    • Bats are unique mammals with powered flight and head-down roosting habits.
    • The molecular mechanisms underlying bat limb development are not well understood.

    Purpose of the Study:

    • To identify key regulatory elements and genes crucial for bat limb evolution.
    • To understand how genetic changes contribute to specialized bat limb morphology.

    Main Methods:

    • Comparative functional genomics of bat and mouse limb development.
    • Mouse-bat sequence swaps of regulatory elements.
    • Enhancer assays in mice to test functional significance.

    Main Results:

    • Identified specific regulatory sequences differing between bats and mice.
  • Bat sequence swaps in mice resulted in phenotypes like delayed ossification and altered digit morphology.
  • Generated a catalog of genes and regulatory elements involved in bat limb development.

    • Conclusions:

    • Regulatory element changes are significant drivers of bat limb evolution.
    • Small genetic modifications can lead to substantial phenotypic adaptations in mammals.
    • This study provides insights into the genetic architecture of flight adaptation in bats.