DNA Marker Index information for Chromosome: Y Marker: BY20540Names and Aliases for this DNA Marker: BY20540, Y33695, FGC65643.Chromosome Position in hg38 Human Genome assembly1: 17221181.Chromosome Position in hg19 assembly2: 19333061 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: A.