Selected SNPs reaching genome-wide significance for hair curl, asparagus anosmia, photic sneeze reflex, and freckling.

“Score” is the negative p-value for the (linear or logistic) regression coefficient where genotypes were coded as 0, 1, or 2 according to the number of copies of the minor allele. Alleles are listed as major/minor. “OR” refers to the allelic odds ratio (for binary traits). “BF” is the Bayes factor; position is the NCBI build 36 human assembly position. Hair curl was coded as a quantitative trait on a 6 point scale where zero was straight and five was “very tight curls.” “Sneeze” refers to photic sneeze reflex and “Asparagus” to asparagus anosmia, the lack of the ability to smell the urinary metabolites of asparagus. Freckling was coded as a quantitative trait on a 17 point scale where zero referred to the lack of freckles. Confidence intervals for ORs and can be found in the tables of the Text S6. Displayed SNPs were selected among all significant hits using a stepwise regression procedure.