The smaller a population, the greater the role of genetic drift. Population bottlenecks can have the same effect. Imagine an island where most mice are plain but a few have stripes. If a volcanic ...

A novel genomic analysis technique has helped reveal the reasons for a ‘bottleneck’ in the growth ... therefore, loss of genetic diversity. Giorgio Manzi, an anthropologist at Sapienza ...

The great bottleneck Almost getting wiped out put a lot more pressure on our ancestors and caused what's known as a genetic bottleneck, which greatly decreases the genetic variation in a population.

A study of the inner ear bones of Neanderthals shows a significant loss of diversity in their shape around 110,000 years ago, suggesting a genetic bottleneck that contributed to Neanderthals' decline.

20 in the journal Nature Communications, researchers discovered that around 110,000 years ago, our closest human relatives ...

The 'longevity bottleneck' hypothesis has been proposed ... animal world of truly remarkable repair and regeneration. That genetic information would have been unnecessary for early mammals that ...