DNA Marker Index information for Chromosome: Y Marker: MFY166Names and Aliases for this DNA Marker: MFY166, MF746980, rs377759146.Chromosome Position in hg38 Human Genome assembly1: 20135295.Chromosome Position in hg19 assembly2: 22297181 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.