DNA Marker Index information for Chromosome: Y Marker: M164Names and Aliases for this DNA Marker: M164, rs375281669, rs796935378.Chromosome Position in hg38 Human Genome assembly1: 19595420.Chromosome Position in hg19 assembly2: 21757306 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.