4427
The striking linkage disequilibrium between specific alleles at the Alu polymorphism ( Alu ( ins ) and Alu ( del ) ) , the HinfI polymorphism ( HinfI - 1 and HinfI - 2 ) , and the CTG repeat polymorphism seen in Caucasoid ( Europeans and Canadians ) populations was also found in the South African Negroid population .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities:  
Answer:
 None