344
In different genes , the core sequences are separated by integer numbers of helical turns .
 ( DNA: core sequences, None) , ( DNA: helical turns, None) , ( DNA: genes, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: core sequences, None) , ( DNA: helical turns, None) , ( DNA: genes, None) 