Predicted mutation
evidence seq id position mutation annotation gene description
MC JC NC_000913 1,978,503 Δ776 bp insB1insA insB1, insA

Missing coverage evidence...
   seq id start end size ←reads reads→ gene description
* * ÷ NC_000913 1978503 1979278 776 50 [0] [0] 51 insB1–insA insB1,insA

New junction evidence
  seq id position reads (cov) reads (cov) score skew freq annotation gene product
* ? NC_000913 = 19785020 (0.000)48 (0.460) 38/256 2.9 100% intergenic (‑305/+16) flhD/insB1 flagellar class II regulon transcriptional activator, with FlhC/IS1 transposase B
?NC_000913 1979279 = 0 (0.000)intergenic (‑64/‑474) insA/uspC IS1 repressor TnpA/universal stress protein

AAATAGAAATGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATG‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑  >  NC_000913/1978351‑1978502
‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑cataaatgTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCATCTGCTATAAA  >  NC_000913/1979279‑1979424
                                                                                                                                                                                                                                                                                                          
AAATAGAAATGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAA                                                                                                                                                       <  3:32249/149‑1
 AATAGAAATGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAA                                                                                                                                                      >  3:18053/1‑149
  ATAGAAATGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAAT                                                                                                                                                     <  5:286864/149‑1
  ATAGAAATGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAAT                                                                                                                                                     >  7:314301/1‑149
     GAAATGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTA                                                                                                                                                  <  4:294460/149‑1
         TGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAAT                                                                                                                                                     >  1:292311/1‑142
         TGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAAT                                                                                                                                                     <  2:292311/142‑1
                   CACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTT                                                                                                                                    <  4:18053/149‑1
                    ACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTG                                                                                                                                   >  7:49687/1‑149
                      TTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAA                                                                                                                                               <  2:331127/135‑1
                         TCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTTTAAGTCATACTTTTGTTTTG                                                                                                                              >  4:104182/1‑149
                           TAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGG                                                                                                                             <  8:315410/148‑1
                                   TTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAAGATAAATGTATAAGTCATACTTTTGTTTTGGGGGTATTT                                                                                                                     <  7:151970/148‑1
                                         AATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTG                                                                                                              >  3:440849/1‑149
                                          ATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGT                                                                                                             <  8:314301/149‑1
                                                       TACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTC                                                                                                >  5:146402/1‑149
                                                       TACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTT                                                                                                 <  1:207133/148‑1
                                                         CTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGC                                                                                              >  4:29791/1‑149
                                                          TCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGC                                                                                              >  8:170042/1‑148
                                                            GTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTAC                                                                                           >  8:212503/1‑149
                                                                    ACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGC                                                                                     >  6:465837/1‑147
                                                                    ACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGC                                                                                     >  7:184999/1‑147
                                                                      GCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTAT                                                                                                                       >  2:97970/1‑111
                                                                      GCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTAT                                                                                                                       <  1:97970/111‑1
                                                                              AACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATG                                                                          >  6:149103/1‑148
                                                                                   AGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAG                                                                    <  3:29791/149‑1
                                                                                                  TTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGG                                                     >  8:489461/1‑149
                                                                                                   TCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAG                                                                    >  4:4080/1‑133
                                                                                                   TCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAG                                                                    <  3:4080/133‑1
                                                                                                     AATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGAT                                                  >  5:429729/1‑149
                                                                                                     AATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGAT                                                  >  8:477422/1‑149
                                                                                                     AATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGA                                                   <  7:454600/148‑1
                                                                                                       TAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTT                                                                                                    <  6:241178/97‑1
                                                                                                       TAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTT                                                                                                    >  5:241178/1‑97
                                                                                                             GTGATGCAGATCACACAAAACACTAAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCA                                          <  6:146402/149‑1
                                                                                                                      ATCACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAA                                  >  7:215564/1‑148
                                                                                                                         ACACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGGATTTCAATCTGTTAAAAAGTTTTTCGCTGCGCTAGCAAGCATATATGCAACAGGAATAATCGAAATGGGATGTTGCGCTCAGGCAAAGTAg                              >  8:434494/1‑148
                                                                                                                           ACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACT                            >  7:100079/1‑149
                                                                                                                           ACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAAC                             >  1:376681/1‑148
                                                                                                                           ACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGA                                                   <  3:314771/126‑1
                                                                                                                           ACAAAACACTCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGA                                                   >  4:314771/1‑126
                                                                                                                                    TCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAA                   >  8:310180/1‑149
                                                                                                                                    TCAATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAA                   >  7:399727/1‑149
                                                                                                                                      AATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGTGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACA                                        <  8:365626/126‑1
                                                                                                                                      AATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAAT                  <  5:465837/148‑1
                                                                                                                                      AATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAAT                  >  3:22893/1‑148
                                                                                                                                      AATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAA                   <  7:310180/147‑1
                                                                                                                                      AATTACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACA                                        >  7:365626/1‑126
                                                                                                                                          ACTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATC              <  8:49687/148‑1
                                                                                                                                          ACTTAACATAAATGCATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCA             >  6:153136/1‑149
                                                                                                                                           CTTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATATGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCAT            <  3:104182/149‑1
                                                                                                                                            TTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCATC           >  2:334591/1‑149
                                                                                                                                            TTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCATC           >  3:127745/1‑149
                                                                                                                                            TTAACATAAATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCATC           >  2:246437/1‑149
                                                                                                                                                     ATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCATCTGCTATAAA  <  4:440849/149‑1
                                                                                                                                                     ATGTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCATCTGCTATAAA  <  6:429729/149‑1
                                                                                                                                                                                                                                                                                                          
AAATAGAAATGGGTCTTTACACTTATCTAAGATTTTTCCTAAATCGACGCAACTGTACTCGTCACTACACGCACATACAACGGAGGGGGGCTGCGATTTTCAATAATGCGTGATGCAGATCACACAAAACACTCAATTACTTAACATAAATG‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑  >  NC_000913/1978351‑1978502
‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑cataaatgTATAAGTCATACTTTTGTTTTGGGTGTATTTCAATCTGTTAAAAAGTTTTTCGCTACGCTAGCAAGCAAAAATGAAACAGGAATAATCGAAATGGGATGTTGCGCACAGTCAAAATAACTCACCGTAAATAATCATCTGCTATAAA  >  NC_000913/1979279‑1979424

Alignment Legend
Aligned base mismatch/match (shaded by quality score): ATCG/ATCG < 3 ≤ ATCG/ATCG < 14 ≤ ATCG/ATCG < 27 ≤ ATCG/ATCG < 36 ≤ ATCG/ATCG
Unaligned base: atcg    Masked matching base: atcg    Alignment gap:     Deleted base: 
Reads not counted as support for junction
read_name Not counted due to insufficient overlap past the breakpoint.
read_name Not counted due to not crossing MOB target site duplication.