cells with the Y chromosome in multiple areas of the brains of deceased women. See also Genealogical DNA test Genetic genealogy Haplodiploid sex-determination system Human Y chromosome DNA haplogroups List of Y-STR markers Muller's ratchet Single nucleotide polymorphism Y chromosome Short Tandem Repeat (STR) Y linkage Y-chromosomal Aaron Y-chromosomal Adam Y-chromosome haplogroups in populations of the world References External links CHM13v2.0 Y chromosome Ensembl genome browser Human Genome Project Information—Human Chromosome Y Launchpad On Topic: Y Chromosome—From the Whitehead Institute for Biomedical Research Nature—focus on the Y chromosome National Human Genome Research Institute (NHGRI)—Use of Novel Mechanism Preserves Y chromosome Genes Ysearch.org – Public Y-DNA database Y chromosome Consortium (YCC) NPR's Human Male: Still A Work In Progress Genetic Genealogy: About the use of mtDNA and Y chromosome analysis in ancestry testing Andrology Chromosomes Chromosome Y Male Sex-determination systems Sexual dimorphism