Biological Sequence & Alignment Viewer helps you inspect, analyze, safely edit, and compare FASTA, GenBank, EMBL, FASTQ, multiple sequence alignments, Sanger ABIF/SCF traces, and supported SnapGene DNA files. Navigate linear or circular records, manage annotations, translate with the right genetic code, find ORFs, explore primers and restriction digests, inspect measured chromatogram signals, align or edit copies, build graphical guide trees, load mapped variant/read evidence, export reproducible artifacts, restore sessions, and ask follow-up questions grounded in authoritative live viewer state. Unsupported binary revisions and source metadata are reported explicitly.