In the ongoing effort to determine just how much of who we are is preordained by our genetic code, heritability, a statistical measurement of how much variation in a trait can be attributed to genetic ...

Heritability explains some of why people who are related tend to be similar, both within and between generations. Source: (clockwise from top left) Pam Simon, Pixabay; Hank Miller, Wikimedia; De-Juan ...

Earlier studies have estimated that life span may be 15-33 per cent heritable across varied populations, with a typical range of 20-25 per cent.

An analysis of twin cohort data suggests that human life span is far more heritable than previously believed. The findings of the analysis show that ...