DNA Marker Index information for Chromosome: Y Marker: M4257Names and Aliases for this DNA Marker: M4257, Z1720, rs112062154.Chromosome Position in hg38 Human Genome assembly1: 21459898.Chromosome Position in hg19 assembly2: 23621784 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.