Hi, I am using YLeaf software to get haplogroup Y of my samples. The problem is that for 4 samples I get no prediction despite the number of SNPs being large. How is it possible? I can't give myself an explanation also because for another sample I have a smaller number of SNPs but I get the prediction of the Haplogroup these are the two results of the cited samples Sample_name Hg Hg_marker Total_reads Valid_markers QC-score QC-1 QC-2 QC-3 MY_SAMPLE NA NA 1947032 9922 0 0 0 0 Sample_name Hg Hg_marker Total_reads Valid_markers QC-score QC-1 QC-2 QC-3 MY_SAMPLE2 J1a2a1a~ J-PF4801*(xZS9873,Z28141,Y4082,FGC20877,FGC17486,ZS9440,FGC4759,PF4878,ZS9039,ZS5601,ZS4851,FGC15996,FGC5239,CTS757,ZS2118,Z39629.2,FGC10400,ZS4216,FGC4720,FGC41947,FGC43287,ZS8485,Y16182,FGC23912,FGC44917,AD0000009,ZS4723,ZS9306) 291455 1363 1.0 1.0 1.0 1.0 TKS Stefania