Blar i Bergen Open Research Archive på forfatter "Kristjansson, Dana"
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Evolution and dispersal of mitochondrial DNA haplogroup U5 in Northern Europe: insights from an unsupervised learning approach to phylogeography
Kristjansson, Dana; Bohlin, Jon; Nguyen, Truc Trung; Jugessur, Astanand; Schurr, Theodore G. (Journal article; Peer reviewed, 2022)Background: We combined an unsupervised learning methodology for analyzing mitogenome sequences with maximum likelihood (ML) phylogenetics to make detailed inferences about the evolution and diversification of mitochondrial ... -
Historical and Phylogeographic Influences on Mitochondrial DNA Diversity in Norwegians
Kristjansson, Dana (Doctoral thesis, 2023-01-13)Mitokondrielt DNA (mtDNA) har vært en viktig kilde til genetisk informasjon for å forstå migrasjonshistorie, genetisk mangfold og demografisk struktur på lang sikt. Til tross for at Norge er kjent for sin Viking-fortid ... -
Matrilineal diversity and population history of Norwegians
Kristjansson, Dana; Bohlin, Jon; Jugessur, Astanand; Schurr, Theodore G. (Journal article; Peer reviewed, 2021)Background: While well known for its Viking past, Norway's population history and the influences that have shaped its genetic diversity are less well understood. This is particularly true with respect to its demography, ... -
Nucleated red blood cells explain most of the association between DNA methylation and gestational age
Haftorn, Kristine Løkås; Denault, William Robert Paul; Lee, Yunsung; Page, Christian Magnus; Romanowska, Julia; Lyle, Robert; Næss, Øyvind Erik; Kristjansson, Dana; Magnus, Per Minor; Håberg, Siri Eldevik; Bohlin, Jon; Jugessur, Astanand (Journal article; Peer reviewed, 2023)Determining if specific cell type(s) are responsible for an association between DNA methylation (DNAm) and a given phenotype is important for understanding the biological mechanisms underlying the association. Our EWAS of ... -
Phylogeographic history of mitochondrial haplogroup J in Scandinavia
Kristjansson, Dana; Schurr, Theodore; Bohlin, Jon; Jugessur, Astanand (Journal article, 2023)Background: Mitochondrial DNA haplogroup J is the third most frequent haplogroup in modern-day Scandinavia, although it did not originate there. To infer the genetic history of haplogroup J in Scandinavia, we examined ... -
Sex differences in DNA methylation variations according to ART conception-evidence from the Norwegian mother, father, and child cohort study
Kristjansson, Dana; Lee, Yunsung; Page, Christian Magnus; Gjessing, Håkon K.; Magnus, Maria Christine; Jugessur, Astanand; Lyle, Robert; Håberg, Siri Eldevik (Journal article; Peer reviewed, 2024)Previous studies have shown cord-blood DNA methylation differences in newborns conceived using assisted reproductive technologies (ART) compared to those conceived naturally. However, whether these ART-related DNA methylation ...