Fig. 3.—

(A) The number of alleles for loci with maximum allele sizes on the interval [20,34]. Only 1.7% of these loci show no variation, which is unexpected for alleles of this size. (B) Kernel density estimate of variance in allele size of the same alleles summarized in (A). Median variance in allele size was 3.43 (vertical, dashed line). Only 1.7% of loci possessed variance in allele size of 0. (C) Kernel density estimate of variance in allele size for all 19,338 dinucleotide loci analysed. Of these, 44 (0.8%) were diallelic with a large alleles size at least two times as great as the small allele size. These loci show very high variance in allele size; all 44 loci possess variance in allele size >4.9, indicated by the vertical, dashed line.