Figure 1. A pair of allelic sequences properly aligned (A), unaligned (B), and translated into a consensus (C).

The trace resulted from direct sequencing of the pair is shown in (D). The one-base insertion is shown in bold face. Links between the allelic strings represent positional homologies. The bases forming mixed trace are highlighted with grey. The standard IUPAC symbols for 2-fold degenerate DNA bases are enclosed in the box.