Sequence cutting Sequence trimming Cut (remove) the end from a molecular sequence. 1.1 This includes end trimming, -- Trim sequences (typically from an automated DNA sequencer) to remove misleading ends. For example trim polyA tails, introns and primer sequence flanking the sequence of amplified exons, or other unwanted sequence.-- trimming to a reference sequence, --Trim sequences (typically from an automated DNA sequencer) to remove the sequence ends that extend beyond an assembled reference sequence. -- vector trimming -- Trim sequences (typically from an automated DNA sequencer) to remove sequence-specific end regions, typically contamination from vector sequences. Trim ends Trimming Trim vector Trim to reference Barcode sequence removal