Figure 5.

Nuclear and mitochondrial DNA quality (i.e., read length) for segments of two aged hairs. For hair A4*, the four 5 cm segments spanned 35 cm of hair. For A8*, the five 5 cm segments spanned 25 cm of hair. For each segment, and regardless of the hair sample, the average size of the mtDNA fragments was larger than the average size of the nuclear DNA fragments. In addition, with the exception of the hair A4 nuclear DNA, fragment sizes tended to decrease along the length of the hair shaft.