DNA Marker Index information for Chromosome: Y Marker: Z6643Names and Aliases for this DNA Marker: Z6643, FGC676, B297.Chromosome Position in hg38 Human Genome assembly1: 7653264.Chromosome Position in hg19 assembly2: 7521305 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.