DNA Marker Index information for Chromosome: Y Marker: Z39491.1Names and Aliases for this DNA Marker: Z39491.1, Z39491, rs937492902.Chromosome Position in hg38 Human Genome assembly1: 6993026.Chromosome Position in hg19 assembly2: 6861067 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: C.