Genetic Structure of the Swedish Population
Author Information
Author(s): Humphreys Keith, Grankvist Alexander, Leu Monica, Hall Per, Liu Jianjun, Ripatti Samuli, Rehnström Karola, Groop Leif, Klareskog Lars, Ding Bo, Grönberg Henrik, Xu Jianfeng, Pedersen Nancy L., Lichtenstein Paul, Mattingsdal Morten, Andreassen Ole A., O'Dushlaine Colm, Purcell Shaun M., Sklar Pamela, Sullivan Patrick F., Hultman Christina M., Palmgren Juni, Magnusson Patrik K. E.
Primary Institution: Karolinska Institutet
Hypothesis
How does the genetic structure of the Swedish population vary geographically?
Conclusion
The study found significant genetic differences between northern and southern Sweden, indicating that population stratification must be considered in genetic studies.
Supporting Evidence
- Genetic differences were observed between northern and southern counties in Sweden.
- The population of Dalarna county showed distinct genetic characteristics.
- Pairwise Fst analysis indicated significant genetic differentiation across regions.
- Extended homozygosity was more prevalent in northern Sweden.
- Geographical distance correlated with genetic variation.
- Finnish ancestry was found to influence genetic structure.
- Population stratification can lead to false conclusions in genetic studies.
- Genetic diversity mirrors geographical distribution within Sweden.
Takeaway
This study looked at the genes of people in Sweden and found that where you live can change your genes a lot, especially between the north and south.
Methodology
The study analyzed genome-wide SNP data from 5174 Swedes with extensive geographical coverage.
Potential Biases
Potential bias from including individuals with Finnish ancestry was addressed by removing those samples.
Limitations
The study may not account for all factors influencing genetic diversity, such as recent migrations.
Participant Demographics
The study included healthy individuals from various regions of Sweden.
Statistical Information
P-Value
p<10−20
Statistical Significance
p<10−100
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website