DNA Marker Index information for Chromosome: Y Marker: Z2542Names and Aliases for this DNA Marker: Z2542, CTS8221, rs138975640.Chromosome Position in hg38 Human Genome assembly1: 15773697.Chromosome Position in hg19 assembly2: 17885577 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.