DNA Marker Index information for Chromosome: Y Marker: Z21491.1Names and Aliases for this DNA Marker: Z21491.1, Z21491.Chromosome Position in hg38 Human Genome assembly1: 21105798.Chromosome Position in hg19 assembly2: 23267684 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.