DNA Marker Index information for Chromosome: Y Marker: Z6638Names and Aliases for this DNA Marker: Z6638, FGC669, rs867476086.Chromosome Position in hg38 Human Genome assembly1: 7014195.Chromosome Position in hg19 assembly2: 6882236 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: A.