DNA Marker Index information for Chromosome: Y Marker: BY25634Names and Aliases for this DNA Marker: BY25634, Y56490, rs949254243.Chromosome Position in hg38 Human Genome assembly1: 19141408.Chromosome Position in hg19 assembly2: 21303294 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.