Allen's rule is a biological rule posited by Joel Asaph Allen in 1877. It states that endotherms from colder climates usually have shorter limbs (or appendages) than the equivalent animals from warmer climates.
Read more about Allen's Rule: Theory, Mechanism, In Humans, Examples in The Animal Kingdom, Other Factors
Famous quotes containing the words allen and/or rule:
“I saw ten thousand talkers whose tongues were all broken,
I saw guns and sharp swords in the hands of young children,
And it’s a hard, it’s a hard, it’s a hard, it’s a hard,
It’s a hard rain’s a-gonna fall.”
—Bob Dylan [Robert Allen Zimmerman] (b. 1941)
“The condition that gives birth to a rule is not the same as the condition to which the rule gives birth.”
—Friedrich Nietzsche (1844–1900)