The largest brain study of its kind had found a gene linked to intelligence.
Who would have thought getting two C's would make such a difference............
'The variant occurs on HMGA2 where there is just a single change in the permutation of the four 'letters' of the genetic code.
DNA, the blueprint for life, comprises four basic chemicals called A (for adenine), C (cytosine), T (thymine) and G (guanine), strung together in different combinations along a double helix.
In this case, the researchers found that people with a double 'C' and no 'T' in a specific section of the HMGA2 gene had bigger brains on average.
"It is a strange result, you wouldn't think that something as simple as one small change in the genetic code could explain differences in intelligence worldwide," says Thompson, a neurologist at the University of California, Los Angeles.
Via Janet Devlin