DNA Marker Index information for Chromosome: Y Marker: Z18240Names and Aliases for this DNA Marker: Z18240, Y13400, rs868361068.Chromosome Position in hg38 Human Genome assembly1: 20511404.Chromosome Position in hg19 assembly2: 22673290 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.