Twins and the mystery of missing heritability: the contribution of gene-environment interactions.

Abstract excerpt

Since 2006, the advent of increasingly larger genome-wide association studies and their meta-analyses have led to numerous, replicated findings of genetic polymorphisms associated with many diseases and traits. Early studies suggested that the identified loci generally accounted for a small fraction of the genetic variance estimated from twin and family studies. This led to the concept of 'missing heritability'....

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