DNA Marker Index information for Chromosome: Y Marker: BY4239Names and Aliases for this DNA Marker: BY4239, Y20163, rs890324242.Chromosome Position in hg38 Human Genome assembly1: 7771697.Chromosome Position in hg19 assembly2: 7639738 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: C.