But new genetic studies of ancient DNA from Neandertals have found that they and the last ancestor they shared with humans, about 600,000 years ago, also lacked much genetic variation, which would require at least three dramatic bottlenecks — an improbable scenario. (sciencemag.org)
Humanity's Ground Zero A massive new genetic study may have zeroed in on humanity's starting point. (scientificamerican.com)
Older men are more likely than younger ones to have children with autism or schizophrenia, and a new genetic study points to why: compared with younger dads, older fathers pass on significantly more random genetic mutations to their offspring that increase the risk for these conditions. (healthland.time.com)