DNA Marker Index information for Chromosome: Y Marker: Y21578.2Names and Aliases for this DNA Marker: Y21578.2, BY4144.2.Chromosome Position in hg38 Human Genome assembly1: 7330691.Chromosome Position in hg19 assembly2: 7198732 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.