DNA Marker Index information for Chromosome: Y Marker: MFY559Names and Aliases for this DNA Marker: MFY559, BY22950, rs367921277.Chromosome Position in hg38 Human Genome assembly1: 20260287.Chromosome Position in hg19 assembly2: 22422173 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.