rs113686221: Understanding Your Y-Chromosome Ancestry Marker
The rs113686221 variant is a specific genetic marker located on the human Y chromosome. It serves as a diagnostic tool in genetic genealogy to identify individuals belonging to the I1 haplogroup, a paternal lineage frequently found in Northern Europe.
What each genotype means
Ancestral Y-chromosome lineage
This genotype represents the ancestral state for this marker, indicating that you do not carry the specific mutation associated with the I1 haplogroup at this position. This marker is used in genealogical research to help trace paternal ancestry and is not associated with any known medical conditions.
This genotype is common in populations that do not belong to the Y-DNA haplogroup I1.
I1 haplogroup marker
This genotype indicates you carry the derived allele associated with the Y-DNA haplogroup I1, a lineage strongly linked to Northern European ancestry. Because this is a Y-chromosome marker, it is passed down strictly from father to son and is used for tracing paternal migration patterns rather than health outcomes.
This genotype is found in individuals belonging to the I1 haplogroup, which is most common in Scandinavia and Finland.
I1 haplogroup marker
This genotype indicates you carry the derived allele associated with the Y-DNA haplogroup I1, a lineage strongly linked to Northern European ancestry. Because this is a Y-chromosome marker, it is passed down strictly from father to son and is used for tracing paternal migration patterns rather than health outcomes.
This genotype is found in individuals belonging to the I1 haplogroup, which is most common in Scandinavia and Finland.
What is rs113686221?
The rs113686221 variant is a single nucleotide polymorphism (SNP) situated on the Y chromosome. Unlike most of the human genome, which is inherited from both parents, the Y chromosome is passed exclusively from father to son. Because it does not undergo recombination, the Y chromosome acts as a stable record of paternal ancestry. SNPs like rs113686221 are essentially signposts in this genetic record. By identifying the specific nucleotide present at this position, researchers and genealogists can determine which branch of the human paternal family tree an individual belongs to. This particular marker is specifically associated with the I1 haplogroup, which is a major branch of the broader I haplogroup lineage.
The Role of Haplogroup I1
Haplogroup I1 is one of the most prominent paternal lineages in Europe. Genetic research suggests that this lineage has deep roots in Northern Europe, with its expansion often linked to post-glacial hunter-gatherer populations and later demographic shifts during the Bronze Age and the migration periods of Germanic and Scandinavian tribes. Because rs113686221 is a defining marker for this group, it is used to distinguish I1 individuals from those belonging to the ancestral I haplogroup or other related subclades. The study of such markers provides insights into historical human migration patterns, helping scientists map how ancient populations moved and settled across the European continent over thousands of years.
Evidence and Interpretation
The evidence linking rs113686221 to the I1 haplogroup is primarily derived from population genetics and genealogical studies. It is important to note that this variant is an ancestral marker, meaning it is used to trace lineage rather than to predict health outcomes or physical traits. There is no current evidence in the GWAS Catalog or clinical databases suggesting that this specific SNP is associated with disease risk or medication response. As an ancestral marker, its significance is purely historical and genealogical. Readers should understand that this information is intended for exploring family history and should not be used for medical diagnosis or clinical decision-making. If you have questions regarding your health, always consult with a qualified healthcare professional.
How to Use This Information
For those interested in genetic genealogy, rs113686221 is a valuable tool for confirming paternal heritage. If your genetic test results indicate the presence of this variant, it suggests that your direct paternal line descends from the I1 haplogroup. This can be a starting point for further genealogical research, such as comparing your results with public databases or participating in surname-based DNA projects. However, it is important to maintain realistic expectations; while this marker identifies a broad ancestral group, it cannot provide a detailed biography of your ancestors or pinpoint specific historical events. Use this information to enrich your understanding of your family's deep history, but remember that genetic markers are only one piece of the complex puzzle that makes up your personal heritage.
How common is this variant?
The rs113686221 variant is specific to the Y-DNA haplogroup I1, which is most prevalent in Northern Europe and Germanic-speaking populations.
Frequently asked questions
Is rs113686221 linked to any diseases?
No, rs113686221 is an ancestral marker used for genealogical purposes. There is no evidence in current scientific literature linking this variant to any medical conditions.
Can women have the rs113686221 variant?
No, because this variant is located on the Y chromosome, it is only present in individuals who carry a Y chromosome, which is typically biological males.
What does it mean if I have the I1 haplogroup?
Having the I1 haplogroup means your direct paternal line traces back to a common ancestor who carried this specific genetic signature. It is a lineage most commonly found in Northern Europe.
How accurate is this marker for ancestry?
This marker is highly reliable for identifying the I1 haplogroup. However, it only tracks your direct paternal line and does not reflect the ancestry of your other family lines.
Sources & further reading
Educational information only, last refreshed 9/24/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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