Article
Unravelling the Red Beard--Dark Hair Dyad
2025-05-12
Abstract excerpt
An enigmatic yet inexplicable human trait is the dark hair-red beard dyad. The prevalence of the ginger beard far exceeds that for red hair. We show that this is another manifestation of the ubiquitous Thayer’s Theorem of countershading. This posits that the inferior/ventral surfaces of organisms, facing away from the sun, are lighter to facilitate camouflage. The highly encephalised human with dominant chin and p...
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Identifiers and source
- Literature Corpus work
- ece20639-db45-53e7-9f0b-6e189b2bb6ce
- DOI
- 10.22541/au.174705144.44646073/v1