YHRD : Y-Chromosome STR Haplotype Reference Database. Y-STR Haplotype Reference Database (YHRD) is a searchable worldwide database of Y-STR Haplotypes in various formats along with tools build upon their distribution.. yhrd, ystr, database, y-chromosome, haplotype, minimal haplotype, swgdam, yfiler, yplex, y12, y23, yfiler plus, forensics, forensic genetics, fingerprint, haplogroup, mutation, mutation rate, mixture, amova, bio-geographical origin, single nucleotide polymorphism, SNP, DNA sequence variation, migration, allele frecuency, y chromosome, population, metapopulation, geographical group, ethnic group, bioinformatics, evolution, ycc, Y-SNP, YSNP, Wiki, Genemapper, Genotyper, Genescan, ABI, Genetic Genealogy, Genealogy, common ancestor