DNA Marker Index information for Chromosome: Y Marker: BY777Names and Aliases for this DNA Marker: BY777, Y12739, GG107, rs1034450163.Chromosome Position in hg38 Human Genome assembly1: 8359438.Chromosome Position in hg19 assembly2: 8227479 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.