An interactive exploration of the 3.2 billion base pairs that define you — from double helix to amino acid.
Two antiparallel strands wound around each other, held together by hydrogen bonds between complementary bases. Adenine pairs with Thymine, Guanine with Cytosine. Drag the helix to rotate it.
Every three nucleotides (a codon) encode one amino acid. Type any text below and watch it become a protein-coding sequence.
Click any chromosome to explore its size, gene count, and notable genes. Each carries a unique fraction of the human genome.
Generate a random DNA sequence, then apply point mutations, insertions, and deletions to see how genetic variation arises.