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nbme15/Block 0/Question#0 (reveal difficulty score)
An investigator is studying Helicobacter ...
Slipped-strand mispairingπŸ”,πŸ“Ί

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submitted by hungrybox(1134),
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scxEse tapnrte sretpea aled to nsdrat g/ssirplrrepoae due to na etbuasnl rengio (in shit aces, execss nidCytie bessa.)

tI culdo be a epaterde aertpnt sa wlel (ie hte udetirctilnoe peeart GAC ni tgntnHi)'u.ons

ehre's a emro ni edhtp nnxateioapl o(rmf dpiiawkei ceirtla on adtS-sileprdpn psinrgamii):

A epsgapli envet yronllam oruccs whne a eesqeunc fo reieitpevt dtsoieulnce nt(made e)etrpas rae fondu ta eht tesi fo enmdaT raptees are enlubats sngoeri of hte meeogn reehw fetqruen setnsinori dan ilstoedne fo cotesiunled cna etak ,eplac entrilgus ni geemno .nrgeearnrtsmea

hungrybox  Anyone know why it's not Transposon insertion? I was thinking maybe because transposons have to be longer than one nucleotide, but I'm not sure. +7  
bingcentipede  @hungrybox I think it's because transposons are usually gene segments rather than a single nucleotide insertion - plus w/ what you said about the repeated pattern, I think slipped-strand mispairing (which is a concept the NBME loves) more likely. +24  
i_hate_it_here  cool so why do I need to know this +3