DNA Marker Index information for Chromosome: Y Marker: BY3968Names and Aliases for this DNA Marker: BY3968, Y19753, rs945552821.Chromosome Position in hg38 Human Genome assembly1: 2793891.Chromosome Position in hg19 assembly2: 2661932 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.