| Feature | Relation with genomic    islands (GIs) | Feature value obtained | 
      
        | IVOM | GIs have higher IVOM scores    (i.e., sequence composition bias) | AlienHunter | 
      
        | tRNA | GIs are flanked by RNA genes | Functional annotation | 
      
        | Phage | GIs may contain phage-related    genes | Functional annotation | 
      
        | Integrase | GIs may contain integrase    genes | Functional annotation | 
      
        | Transposase | GIs may contain transposase    genes | Functional annotation | 
      
        | Highly expressed gene | GIs may not contain highly    expressed genes | Functional annotation | 
      
        | Gene density | GIs have lower gene densities | Genome sequence | 
      
        | Average intergenic distance | GIs have higher inter-genic    gene distance | Genome sequence |