Why do men and women have different heights? Why do people have different predispositions to BMI, blood pressure and lipid levels?
Chromosome X is one of the two sex-determining chromosomes and researchers from the University of Helsinki set out to analyze the commonly occurring genetic variation in chromosome X to find genetic factors that could explain individual differences in various traits.
Hundreds of genetic variants having an effect on these traits have already been identified but the X chromosome has not been studied in most of previous studies. 25,000 Northern European individuals later, the researchers say they have some answers.