Gloger's rule

noun Glo·ger's rule \ˈglōgə(r)z-\

Definition of Gloger's rule

  1. :  a statement in zoology: within a species of warm-blooded animals the degree of melanin pigmentation tends to vary directly with the mean environmental temperature

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Origin and Etymology of gloger's rule

after C. W. L. Gloger †1863 German zoologist

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to criticize severely

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