directional selection
Coverage of directional selection in the Nexus archive.
- Red hair may be increasing as study points to surprising evolution trend
A Harvard Medical School study analyzing 16,000 ancient genomes found evidence that natural selection has favored the red hair gene over 10,000 years, potentially increasing its prevalence. Researchers identified directional selection linked to the shift to farming and northern climates, suggesting red hair may have provided survival advantages like improved vitamin D synthesis.
- Landmark ancient-genome study shows surprise acceleration of human evolution
A landmark ancient-genome study reveals an unexpected acceleration in human evolution, with ancient DNA analysis showing pervasive directional selection across West Eurasia. The research highlights significant genetic changes over time, challenging previous assumptions about the pace of human evolutionary development.
- Ancient DNA reveals pervasive directional selection across West Eurasia [pdf]
A study using ancient DNA analysis reveals that directional selection was widespread across West Eurasia, indicating significant evolutionary pressures over time. The research, led by Harvard Medical School, provides insights into genetic adaptation in human populations.
- Ancient DNA reveals pervasive directional selection across West Eurasia
A study analyzing 15,836 ancient West Eurasian genomes reveals widespread directional selection, challenging previous assumptions about the rarity of sustained allele frequency changes. The findings highlight significant evolutionary pressures across the region over time.