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Population genetics is the study of the genetic composition of populations, including distributions and changes in genotype and phenotype frequency in response to the processes of natural selection, genetic drift, mutation and gene flow.
Prior work has identified a male-only effective population size bottleneck 3-5000 years ago. While violent competition has been proposed as a cause, the authors here show that a segmentary patrilineal system with lineal fission provides a peaceful alternative explanation.
A comprehensive variation map constructed by deep sequencing 1,904 accessions of weedy and cultivated broomcorn millet sheds light on the genetic architecture of agronomic traits during domestication.
Analysis of ancient DNA from 424 individuals in the Avar period, from the sixth to the ninth century AD, reveals population movement from the steppe and the prolonged existence of a steppe nomadic descent system centred around patrilineality and female exogamy in central Europe.
Reflecting on the importance of short tandem repeats (STRs) in population genetics, Ning Xie highlights a 2023 publication that characterized genome-wide STR variation in global human genomes to expand our understanding of STR genetic diversity within and across populations.
A publication in Nature reports the data release of around 245,000 clinical-grade whole-genome sequences as part of the NIH’s All of Us Research Programme. Several companion papers highlight the value of better capturing global genomic diversity.
In this Journal Club, Yoav Ram recalls how he reconciled results from his own research with the reduction principle through the help of a paper published in PNAS by Altenberg et al.
In a prospective study involving 1,090 high-risk pregnancies, a comprehensive screening test of fetal cell-free DNA successfully detected pathogenic aneuploidies, microdeletions and monogenic variants linked to fetal anomalies. The inclusion of monogenic conditions alongside chromosomal abnormalities in this test resulted in a 60.7% increase in the detection rate for suspected fetal structural abnormalities.
