Danielle Posthuma, Peter Visscher and colleagues report a meta-analysis of 17,804 traits based on virtually all twin studies from the last 50 years. For a majority of traits, twin resemblance seems solely due to additive genetic variation and lacks evidence for a substantial influence of shared environment or non-additive genetic variation.
- Tinca J C Polderman
- Beben Benyamin
- Danielle Posthuma