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Gloger's rule is an ecogeographical rule which states that within a species of endotherms, more heavily pigmented forms tend to be found in more humid environments, e.g. near the equator. It was named after the zoologist Constantin Wilhelm Lambert Gloger , who first remarked upon this phenomenon in 1833 in a review of covariation of climate and ...
Foster's rule, the island rule, or the island effect states that members of a species get smaller or bigger depending on the resources available in the environment. [ 28 ] [ 29 ] [ 30 ] The rule was first stated by J. Bristol Foster in 1964 in the journal Nature , in an article titled "The evolution of mammals on islands".
Rensche sought out universal patterns in biology.He was responsible for naming Allen's Rule and Gloger's Rule, and proposed what is now called Rensch's rule in 1950. [8] It is an allometric law about the relationship between sexual size dimorphism and which sex is larger.
In biology, a cline is a measurable gradient in a single characteristic (or biological trait) of a species across its geographical range. [1] Clines usually have a genetic (e.g. allele frequency, blood type), or phenotypic (e.g. body size, skin pigmentation) character. They can show either smooth, continuous gradation in a character, or more ...
Gloger was the first person to recognise the structural differences between swallows and swifts, and also the first to put up artificial bat boxes. He was the originator of what is now known as Gloger's rule , which states that dark pigments increase in races of animals (birds were the examples in which he originally noticed the pattern) living ...
What we eat and how we live impact our gene expression and cellular biology, determining our outcomes. Food chemicals go into your body and act as signaling molecules. They can directly increase ...
A Food Safety Expert Breaks It Down Amid New FDA Rules. Korin Miller. January 23, 2025 at 12:52 PM. This Berry Is Most Likely To Carry Illnesses Stefan Tomic - Getty Images.
Allen's rule - Hare and its ears on the Earth [1]. Allen's rule is an ecogeographical rule formulated by Joel Asaph Allen in 1877, [2] [3] broadly stating that animals adapted to cold climates have shorter and thicker limbs and bodily appendages than animals adapted to warm climates.