DNA Marker Index information for Chromosome: Y Marker: FGC12378Names and Aliases for this DNA Marker: FGC12378, Y10987, rs746675142.Chromosome Position in hg38 Human Genome assembly1: 19528135.Chromosome Position in hg19 assembly2: 21690021 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: T.