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 ...