DNA Marker Index information for Chromosome: M Marker: A4021GNames and Aliases for this DNA Marker: A4021G, A4021, rs199771084.Chromosome Position in hg38 Human Genome assembly1: 4021.Chromosome Position in hg19 assembly2: 4021 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.