Fig. 6

Somatic oligo(dT) contractions and resulting merle phenotypes can vary between individuals. Photographs and fragment analysis chromatograms are shown for three littermates. Amplicon size in base pairs is shown on the x-axis, and the y-axis measures signal intensity (RFU). All three dogs share an identical inherited Merle allele in the harlequin range, but possess either zero (a), one (b), or two (c) contracted Merle amplicons that correlate with the degree of pigmentation in their coats. Genotypes are listed above each chromatogram, with M representing the inherited Merle allele, m indicating the wild-type allele (not pictured), and (M) denoting the contracted Merle amplicons