In a fascinating new study published in the journal Genome Biology and Evolution, researchers explored the connection between a common morning habit and the presence of Neanderthal DNA in our genetic makeup. While Neanderthals vanished around 40,000 years ago, their genetic legacy seems to linger, influencing certain aspects of our daily lives.
Unraveling Our Genetic Past
The research delved into the genetic makeup of Neanderthals, who lived in Eurasia for hundreds of thousands of years before their extinction. Scientists believe there was an overlap between Neanderthals and our ancient ancestors, leading to interbreeding. It means that genes from both Neanderthals and humans may have been passed down through generations.
The study focused on 246 circadian genes that impact our internal “body clock,” affecting our sleep patterns and energy levels. The results revealed intriguing differences between Neanderthals and modern humans, suggesting that some humans might have inherited their body clocks from Neanderthal ancestors.
John Capra’s Breakthrough Discovery
Lead author John Capra from the University of California in San Francisco explained that by combining ancient DNA, large-scale genetic studies in modern humans, and artificial intelligence, they discovered substantial genetic differences in the circadian systems of modern humans and Neanderthals.
The analysis of Neanderthal DNA in modern human genomes revealed a consistent trend: the effects of these genes predominantly lean toward making individuals morning people.
The Reason for Our Morning Habits
Professor Mark Maslin from University College London, not involved in the study, shared that now we have genetic evidence that some of us truly are morning people. This intriguing insight into our genetic heritage sheds light on how ancient adaptations still influence our daily routines.
The study’s findings offer a captivating glimpse into the enduring influence of Neanderthal DNA on our daily lives. It deepens our understanding of the intricate connection between our genetic makeup and the habits we exhibit today, providing a fascinating chapter in the ongoing exploration of human evolution.