3909
Further molecular analysis of the origin of new mutations at the hprt locus should aid in resolving the issue of an apparent difference in the frequency of hprt mutations in males and females
 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