A Manhattan-like scatter plot of all polymorphic STRs across the chromosomes of the human genome. The x-axis represents genomic coordinates of the chromosomes in sequential order. The y-axis includes normalized upper and lower bounds of varied repeat number among 7 individuals (represent by "-" in two different colors). Upper/lower bound is calculated by multiplying +/-1.25 to upper/lower quartile of repeat number and normalized by dividing median value among 7 individuals. The y-axis also includes normalized maximum and minimum varied repeat numbers among 7 individuals (represented by symbol "x" in two different colors). At a threshold value of "6", 5 polymorphic STR patterns (circled symbols ) were considered as important biomarker candidates in this example.