DNA Marker Index information for Chromosome: Y Marker: Y21747.1Names and Aliases for this DNA Marker: Y21747.1, Y21747, B2135, rs868644346.Chromosome Position in hg38 Human Genome assembly1: 15958311.Chromosome Position in hg19 assembly2: 18070191 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: A.