1944
However , strains in which both of the two most highly related genes , DdPIK1 and DdPIK2 , were disrupted showed both growth and developmental defects , while double knockouts of DdPIK1 and DdPIK3 and DdPIK2 and DdPIK3 appear to be lethal .
 GENE: DdPIK1; GENE: DdPIK2; GENE: DdPIK1; GENE: DdPIK3; GENE: DdPIK2; GENE: DdPIK3
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: DdPIK1; GENE: DdPIK2; GENE: DdPIK1; GENE: DdPIK3; GENE: DdPIK2; GENE: DdPIK3