DNA Marker Index information for Chromosome: Y Marker: BY9066.4Names and Aliases for this DNA Marker: BY9066.4, M4143.4, rs34259387.Chromosome Position in hg38 Human Genome assembly1: 21658115.Chromosome Position in hg19 assembly2: 23820001 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: T.