From Brian Horton
Biologist Steven Rose highlights a recent genome-wide association study seeking genes associated with educational attainment (Science, vol 340, p 1467). He says the genes found accounted for a mere 0.02 per cent of the difference (26 October, p 28).
That figure applies only to the single most significant gene located by the researchers. The combined impact of all the genetic differences identified raised the figure to around 2 per cent of the variation in educational level.
West Launceston, Tasmania, Australia
