Today's people carry a lot of special DNA of a Neanderthal man with a slightly smaller skull of a shaft, according to a study published today that will be the case. study Molecular basements on the globular shape of our brain.
"Identify our goal Applicant generator and biological traits that may be related to the globularity of the brain"Amanda geneticist Amanda Tilot, of Max Planck Institute of Psycholinguistics and co-author of the study published in the current Biology magazine.
In order to complete its investigation, the paleoanthropologist Philipp Gunz, from the Max Planck Institute for Hebrew Anthropology based in Leipzig, Germany, together with fossil shaft analysis, antigen genomes and brain imaging data.
In addition, they benefited from the fact that some people with a European ancestry animal Provide some pages of Neanderthal DNA that were buried in their genomes.
The researchers were learning the genome of about 4,500 inhabitants, the sections of Neandertal DNA and found that those present on crromosome 1 and 18 were associated with more globular brains and, therefore, longer.
These pieces were also associated with two genera, known as UBR4 and PHLPP1, linked to the development of a brain.
These experts received the most severe evidence of the effects of this DNA Neandertal DNA on gene activity in the putamen, which is located in the basal ghanglia, and the circle.
Both structures involve the preparation, learning and coordination of movement, and in the case of basal ganglia they also contribute to mental activities.
"The effects of getting these rare fractions of Neandertal DNA are very simple, but are detected due to a large sample size", he mentioned Simon Fisher, the geneticist expert at Max Planck Institute of Psycholinguistics.
This research is not just "the first view of global foundations of globularity," because, "as other aspects of the brain structure, it is a way of influencing the effects of many genetic-related effects," he said . Fisher.
The authors of the survey expect future surveys of discovery of human genome as well as an additional genera related to today's skull globular shape.