Repeated dna sequences represent a special challenge in genome sequence assembly. which of the following would be harder to assemble correctly, assuming the number of copies of the repeat can be determined?
sequences containing repeats longer than the dna fragments to assemble
sequences containing repeats shorter than the dna fragments to assemble

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?