DNA Marker Index information for Chromosome: Y Marker: L812.1Names and Aliases for this DNA Marker: L812.1, L812, S391, rs774242831.Chromosome Position in hg38 Human Genome assembly1: 12738101.Chromosome Position in hg19 assembly2: 14850035 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.