3486
We have generated transgenic fly strains with mutations affecting specific TRA - 2 isoforms to investigate their individual roles in regulating the alternative processing of doublesex , exuperantia and tra - 2 pre - mRNA .
 GENE: TRA - 2 isoforms; GENE: doublesex; GENE: exuperantia; GENE: tra - 2 pre - mRNA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: TRA - 2 isoforms; GENE: doublesex; GENE: exuperantia; GENE: tra - 2 pre - mRNA