It corresponds roughly to the geographical spread of rhesus negative blood types.
operating system | Universal Music Group | Super Nintendo Entertainment System | Nintendo Entertainment System | Warner Music Group | Coxeter group | Android (operating system) | Global Positioning System | Volkswagen Group | Group of 77 | RTL Group | True Blood | Solar System | girl group | BT Group | ABB Group | X Window System | Group One | Virgin Group | Thales Group | ING Group | Korean Broadcasting System | group | Rio Tinto Group | Blood | Bloomsbury Group | System of a Down | Penguin Group | Domain Name System | Carlsberg Group |