Fig. 3.

Distribution of repeat length changes on maternal and paternal transmission of the PM allele with and without KBrO₃ treatment. The product of the total number of alleles of each repeat size and the number of repeats added or lost to that particular allele class was divided by the total number of expanded alleles examined. A) Transmission of the PM by KBrO₃-treated males leads to an increase in the number of larger expansions. The profile of repeat length changes on paternal and maternal transmission in untreated animals is indistinguishable (Entezam, et al., 2007; Entezam and Usdin, 2008). B) Paternal exposure to KBrO₃ results in larger repeat length changes than maternal exposure.