Scientists have taken a step forward in helping to solve one of life's greatest mysteries – what makes us human?
An international team of researchers have discovered a new gene that helps explain how humans evolved evolved from apes.
Scientists say the gene – called miR-941 – appears to have played a crucial role in human brain development and may shed light on how we learned to use tools and language.
Researchers say it is the first time that a new gene – carried only by humans and not by apes – has been shown to have a specific function within the human body.
A team at the University of Edinburgh compared the human genome to 11 other species of mammals, including chimpanzees, gorillas, mouse and rat, to find the differences between them.
The results, published in Nature Communications, showed that the gene – miR-941 – is unique to humans. The researchers say that it emerged between six and one million years ago, after humans had evolved from apes.
The gene is highly active in two areas of the brain that control our decision making and language abilities. The study suggests it could have a role in the advanced brain functions that make us human.
It is known that most differences between species occur as a result of changes to existing genes, or the duplication and deletion of genes.
But scientists say this gene emerged fully functional out of non-coding genetic material, previously termed "junk DNA", in a startlingly brief interval of evolutionary time. Until now, it has been remarkably difficult to see this process in action.
Researcher Dr Martin Taylor, who led the study at the Institute of Genetics and Molecular Medicine at the University of Edinburgh, said the results were significant.
He said: "As a species, humans are wonderfully inventive – we are socially and technologically evolving all the time. But this research shows that we are innovating at a genetic level too. 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."
University of Edinburgh: http://www.ed.ac.uk
This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.
With funding from the Defense Department, scientists have begun work on devices that would use electric pulses to realign a memory process gone awry
On Friday, the Food and Drug Administration released a vital set of numbers about the routine use of antibiotics …
Side order of veg with that mammoth leg? The Neanderthal diet was probably more varied than we think – using vegetables, herbs and different cooking techniques
An exoskeleton that enables movement and provides tactile feedback has helped eight paralysed people regain sensation and move previously paralysed muscles
A female western gray whale set a new record swimming from Russia to Mexico and back, a total of 13,988 miles, in 172 days
Scientists operating a remote-controlled vehicle about 2,000 feet below water get a rare glimpse of a sperm whale. CBSN's Vladimir Duthiers and Elaine Quijano report on the video.
According to the experts, "blinking is like a kitty kiss"
Genetic profiling of cancer cells can help guide treatment, but such profiles can be ambiguous. Results would be more accurate if all labs tested normal cells from each patient, too.
Researchers in Kenya uncover tools dated to 3.3 million years ago, long before the first humans, as we know them, walked the Earth.
Researchers are facing up to methodological flaws that plague functional magnetic resonance imaging, but the interpretative problems might be harder to solve