For anyone interested, the problem mostly boils down to the sequence lenght we can read. Modern sequencing techniques allow us o read 200 to 500 bases at a tim

For anyone interested, the problem mostly boils down to the sequence lenght we can read. Modern sequencing techniques allow us o read 200 to 500 bases at a time. So after hat we need do find a way o arrange these short sequences into a single sequence. And this can be prety hard, especially when you are doing 'de novo' assembly[0]. Besides that, there is the fact that some regions of DNA are repeated[1]. [0] - https://en.wikipedia.org/wiki/Third-generation_sequencing#De_novo_assembly https://en.wikipedia.org/wiki/Third-generation_sequencing#De... [1] - https://en.wikipedia.org/wiki/Repeated_sequence_(DNA) https://en.wikipedia.org/wiki/Repeated_sequence_(DNA)