7824
In unc - 4 mutants , VA motor neurons assume the pattern of synaptic input normally reserved for their lineal sister cells , the VB motor neurons ; the loss of normal input to the VAs produces a distinctive backward movement defect .
 GENE: unc - 4 mutants
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: unc - 4 mutants 
Answer:
 GENE: unc - 4 mutants