DNA Marker Index information for Chromosome: Y Marker: B666Names and Aliases for this DNA Marker: B666, FT310425, rs769884260.Chromosome Position in hg38 Human Genome assembly1: 6755092.Chromosome Position in hg19 assembly2: 6623133 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.