Neanderthal brains were similar in size to those of modern humans but differed in shape. What scientists cannot tell from fossils is how Neanderthal brains might have differed in function or organization of brain layers such as the neocortex, the outer region of the cerebral cortex. Researchers at the Max Planck Institute of Molecular Cell Biology and Genetics have now analyzed the effect of a single amino acid change in the transketolase-like 1 (TKTL1)...
