6165
Using the rap1t alleles to generate wild - type cells differing only in telomere tract lengths , we also show that telomere position effects are highly sensitive to changes in the size ( or structure ) of the telomeric tract .
 GENE: rap1t alleles
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: rap1t alleles 
Answer:
 GENE: rap1t alleles