DNA Marker Index information for Chromosome: Y Marker: BY7.1Names and Aliases for this DNA Marker: BY7.1, BY7, rs867141122.Chromosome Position in hg38 Human Genome assembly1: 16995055.Chromosome Position in hg19 assembly2: 19106935 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.