However, perception of the particular set of phonemes specific to a native language only develops during ontogeny. There is no genetic predisposition towards the phonemic makeup of any single language. Children in a particular country are not genetically predisposed to speak the languages of that country, adding further weight to the assertion that genetic memory is not Lamarckian.[1] However, there is scientific evidence of a gene for perfect pitch which is more common in Asian countries where pitch is critical to the meaning of a spoken word.[citation needed]