Figure 1

<p>Y-chromosomal haplogroup distribution in prostate cancer cases and controls in the Korean population. The parsimonious tree on the top shows the evolutionary relationship of fifteen haplogroups. Nomenclature is according to the Y Chromosome Consortium <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0000172#pone.0000172-Y1" target="_blank">[37]</a>. ^aProstate cancer; ^bNormal control; Exact <i>P</i> value = 0.44225±0.02442</p