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All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
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Related Experiment Video

Updated: Jan 14, 2026

Single-Animal, Single-Tube RNA Extraction for Comparison of Relative Transcript Levels via qRT-PCR in the Tardigrade Hypsibius exemplaris
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Adaptive Responses in High-Radiation Environments: Insights From Chernobyl Wildlife and Ramsar Residents.

Smj Mortazavi1, Sahel Rabiee2, AmirAli Fallah1

  • 1Ionizing and Non-ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran.

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Summary

Organisms adapt to high radiation levels, seen in Chernobyl frogs with darker skin and Ramsar residents with better DNA repair. These findings highlight natural selection

Keywords:
DNA repair capabilitiesadaptive responsechernobyl wildlifehigh natural background radiation arearamsar residents

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Area of Science:

  • Radiobiology
  • Environmental Science
  • Evolutionary Biology

Background:

  • Organisms exhibit adaptive responses to high radiation environments.
  • Chernobyl's wildlife, particularly darker-pigmented frogs, and Ramsar, Iran's residents (high natural background radiation) serve as case studies.
  • Human and animal studies demonstrate adaptation to elevated radiation levels.

Purpose of the Study:

  • To explore adaptive mechanisms in organisms exposed to high radiation.
  • To compare radiation adaptation strategies in Chernobyl wildlife and Ramsar residents.
  • To understand the role of radiation in natural selection and evolutionary survival.

Main Methods:

  • Comparative analysis of adaptive responses in different species and environments.
  • Review of studies on melanin production in Chernobyl frogs.
  • Examination of DNA repair mechanisms in Ramsar residents.

Main Results:

  • Darker pigmentation in Chernobyl frogs is a potential adaptation to radiation.
  • Enhanced DNA repair capabilities observed in Ramsar residents.
  • Evidence suggests physiological and ecological adaptations to mitigate radiation damage.

Conclusions:

  • Organisms possess remarkable resilience to extreme environmental stressors like high radiation.
  • Adaptations to radiation provide insights into evolutionary survival mechanisms.
  • Findings have implications for radiobiological research and understanding natural selection.