DNA Marker Index information for Chromosome: Y Marker: M20Names and Aliases for this DNA Marker: M20, PF5570, rs3911, M20.Chromosome Position in hg38 Human Genome assembly1: 19571568.Chromosome Position in hg19 assembly2: 21733454 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.