A gene, called miR-941, appears to have played a crucial role in human brain development and could shed light on how we learned to use tools and language, according to scientists. A team at the University of Edinburgh compared it to 11 other species of mammals, including chimpanzees, gorillas, mice and rats.
The results, published in Nature Communications, showed that the gene is unique to humans.
The team believe it emerged between six and one million years ago, after humans evolved from apes.
Researchers said it is the first time a new gene carried by humans and not by apes has been shown to have a specific function in the human body.
- "This new molecule sprang from nowhere at a time when our species was undergoing dramatic changes: living longer, walking upright, learning how to use tools and how to communicate. We're now hopeful that we will find more new genes that help show what makes us human." The gene is highly active in two areas of the brain, controlling decision-making and language abilities, with the study suggesting it could have a role in the advanced brain functions that make us human.
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