DNA Marker Index information for Chromosome: Y Marker: BTL60000020450Names and Aliases for this DNA Marker: BTL60000020450, FTD85076.Chromosome Position in hg38 Human Genome assembly1: 19818949.Chromosome Position in hg19 assembly2: 21980835 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: C.