DNA Marker Index information for Chromosome: Y Marker: M158Names and Aliases for this DNA Marker: M158, rs375691065, rs796519662.Chromosome Position in hg38 Human Genome assembly1: 19554480.Chromosome Position in hg19 assembly2: 21716366 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.