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Pairwise sequence alignment
Align two DNA or protein sequences with the classic dynamic-programming algorithms — global Needleman–Wunsch or local Smith–Waterman — and get the alignment with score, percent identity and gap count.
Alignment (| = match, . = mismatch)
Good to know
Simple scoring, honestly labelled
This tool uses the match / mismatch / gap scores you set — perfect for teaching and quick checks. Research-grade protein alignments usually use substitution matrices such as BLOSUM62; our training covers those in depth.