clinal

/ˈklaɪnəl/
adjective
  1. Relating to or showing a gradual change or gradient across a geographic area or population.
    • The clinal distribution of the gene suggests a slow migration of ancient human populations.
    • The clinal variation in flower color helps scientists understand how plants adapt to different climates.
    • Researchers observed a clinal pattern in bird size, with larger birds found in colder regions.
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