DNA Marker Index information for Chromosome: Y Marker: L1256.1Names and Aliases for this DNA Marker: L1256.1, L1256, rs1031037797.Chromosome Position in hg38 Human Genome assembly1: 19512188.Chromosome Position in hg19 assembly2: 21674074 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.