biological rule
generalized principle to describe patterns observed in living organisms
All-or-none law
Physiological principle
Allen's rule
biological rule that warm-blooded animals from colder climates usually have shorter limbs
Hamilton's rule
the principle that kin-altruistic genes increase in frequency when the product of the recipient–actor genetic relatedness and the recipient’s reproductive benefit exceeds the reproductive cost to the actor
Emery's Rule
Trend of parasitic organisms
Harrison's rule
Evolutionary biology observation by Launcelot Harrison
Jarman-Bell principle
ecological concept linking an herbivore's diet and size
Bergmann's rule
ecogeographical rule