DNA Marker Index information for Chromosome: Y Marker: Y19951Names and Aliases for this DNA Marker: Y19951, Z40133, rs1037181749.Chromosome Position in hg38 Human Genome assembly1: 9619727.Chromosome Position in hg19 assembly2: 9457336 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.