Modern humans descended from not one, but at least 2 ancestral populations that drifted apart and later reconnected, long before modern humans spread across the globe.
A new study has provided the most comprehensive analysis of human genetic diversity to date, clarifying the genetic relationships between human populations around the world.
An international research project to sequence whole genomes from mountain gorillas has given scientists and conservationists new insight into the impact of population decline on these critically endangered apes. While mountain gorillas are extensively inbred and at risk of extinction, research published today in Science finds more to be optimistic about in their genomes than expected.