| 1 | The bicycle saddle is too high. | |
| 2 | So we started doing transposon mutagenesis. | |
| 3 | Could you help me to put my luggage in the rack, please? | |
| 4 | Transposons are just small pieces of DNA that randomly insert in the genetic code. | |
| 5 | A new subsystem building doubles as a meeting hall and the island's first visitor center. |
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