 According to our intuitive or “folk” conception of innateness, a trait qualifies as innate if it is either typical of most members of the species, or if it is developmentally buffered against certain environmental factors, or if it is an evolutionary adaptation (Griffiths, et al. 2009). It might be argued that all three of these properties are coextensive with traits that are genetically specified: 1. Species-typicality is explained, on this view, by the fact that members of each species share a common pool of genes. 2. Some genes are developmentally buffered against certain environmental factors, such that within some range of variation those factors do not impact the expression of those genes. 3. Finally, many biologists see the gradual accumulation of genetic mutations as the primary mechanism allowing phenotypes to undergo evolutionary adaptation. Putting these ideas together, it might seem plausible to cash out the folk conception of innateness in terms of genetic information. More precisely, a trait could be described as more or less innate depending on the extent to which its development is guided by genetic information. One potential advantage of this analysis is that it can make sense of the dispositional nature of certain “innate” traits. Many traits have a late developmental onset, such as those associated with puberty in humans. Their developmental fixity, their species typicality, and their functionality can lead people to judge these traits as “innate” despite not being present early in life. This judgment makes sense if innate traits are those which are genetically specified, since the genetic predisposition to develop certain characters is present in the organism from conception.