Biological rules | |
|---|---|
| Cope's rule | Organisms within a population get larger over time |
| Bergmann's rule | Populations have larger bodies in colder climates |
| Allen's rule | Populations have shorter appendages in colder climates |
| Gloger's rule | Populations have lighter colouration in colder climates |
| Rensch's rule | Size dimorphism will increase with increasing body size when the male is the larger sex, and decrease with increasing average body size when the female is the larger sex |