Fig. 2

Histogram representing distribution of genotype frequencies of XRCC5 (0R/1R/2R/3R), XRCC6 (C/G) and XRCC7 (G/T) polymorphisms among 20 donors studied (N = 20). X-axis represents different genotypes of XRCC5 (0R/1R/2R/3R) polymorphism and Y-axis represents genotypic frequency (%)