🌍 Trait Rarity Guide
🌍 Rarity by Country (50 Countries)
Physical Traits
Green, gray, amber & violet ranked
Red, blonde & strawberry blonde
Only 2% of the world
MC1R genetics explained
How unusual is your height?
Different colored eyes
Combination rarity math
Biological Traits
Personality & Identity
Frequently Asked Questions
How is rarity calculated?
The Avortas calculator multiplies the global probability of each of your traits. For independent traits, P(A and B) = P(A) × P(B). Correlated traits are adjusted for known genetic linkages.
Which trait matters most for rarity?
Blood type and eye color typically have the widest ranges (from 55% to 0.01%), making them the strongest individual rarity drivers. But combination stacking — adding more traits — is always more powerful than any single trait.
Are the statistics exact?
They're based on the best available population data from WHO, genetic studies, and demographic surveys. Exact precision is impossible due to varying data sources, but relative rarity rankings are reliable.
FAQ
What makes a trait rare?
A trait is considered rare when it appears in less than 5% of the global population, and extremely rare below 1%.
Which physical trait is rarest?
Red hair combined with blue eyes is one of the rarest natural combinations, found in roughly 0.17% of people worldwide.
How many countries are covered?
We currently have detailed rarity data for 50 countries spanning every continent.