Helps in a forensic context for the biological profile.�Population, and environmental stressors like mobility, and disease affect body size/shape. Can also be used to understand�the sexual dimorphism of extinct hominins.Ecogeographical rules related to thermoregulation:Bergmann�s Rule (1847) If you have...
Helps in a forensic context for the biological profile.�
Population, and environmental stressors like mobility, and disease affect body size/shape. Can also be used to understand�the sexual dimorphism of extinct hominins.
Ecogeographical rules related to thermoregulation:
Bergmann�s Rule (1847) If you have a species that is variable, and spread out over a geographical area you will see a larger variance of those species. Relating to body mass; bigger in colder climates, smaller in warmer climates.
Allen�s Rule (1877) concerned with appendage�s. Shorter in colder climates, and longer in warmer climates.
Together they are Bergmann�s and Allen�s rules.
A great modern example is observed in the following populations:�
Inuit,�Shorter limbs, and rounder stocky body:
Image Source:�Ansgar Walk. Traditional clothing; left: seal, right: caribou (Iglulik). Wikimedia Commons.�
Maasai,�Longer limbs, slender taller body:
Image Source: Brutere.�Maasai men performing traditional jumping dance (Adumu). Wikimedia Commons.�
This is showing basic phenotypical adaptations to different climates, and how the environment can biologically change populations.�
Note: Diet, nutrition, humidity, and variation (and many other variables) play a role in phenotype.
