Both Nature and Science are currently celebrating the 100th anniversary of the birth of an icon of logic, computer science, and mathematical biology: Alan Turing. In reading Andrew Hodges’s spectacular biography of Turing (1983) many years ago I came to appreciate...
A minimal requirement for evolution via natural selection is heritable phenotypic variation that affects reproductive success, or more generally, genetic success. The concept of heritability is often used somewhat loosely in casual non-technical conversation, but...