DNA Marker Index information for Chromosome: Y Marker: Y138738.1Names and Aliases for this DNA Marker: Y138738.1, Y138738, rs781158964.Chromosome Position in hg38 Human Genome assembly1: 17181369.Chromosome Position in hg19 assembly2: 19293249 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.