The structure of the human genome can thus be likened to a sentence that reads— This . . . . . . is the . . . . . . str . . . uc . . . . . . ture . . . , , , . . . of . . . your . . . ( . . . gen . . . ome . . . ) . . . —where the words correspond to the genes, the ellipses correspond to the spacers and stuffers, and the occasional punctuation marks demarcate the regulatory sequences of genes.