DNA Marker Index information for Chromosome: Y Marker: FGC68688Names and Aliases for this DNA Marker: FGC68688, rs903397803.Chromosome Position in hg38 Human Genome assembly1: 19726516.Chromosome Position in hg19 assembly2: 21888402 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.