"Aspects of language known to vary cross-linguistically, like morphosyntax or phonology, may be a response to the environment in which human groups live, possibly mediated by some kind of genetic changes."

"The sequencing of genomes from present-day human groups on a massive scale (e.g. the 1000-Genomes Project) suggests that the genetic foundations of language (that is, the set of genes that regulate the aspects of brain development, wiring, and function important for language acquisition and processing and the organs necessary for its production and perception) may not be uniform across the species and that variants of many of these genes may influence language knowledge and use by the neurotypical population."

"This is in line with recent research suggesting that cognitive differences among human populations are not only due to cultural and sociological forces, but also to genetic changes in response to different environments and ecological niches."

"Overall, this opens the possibility that aspects of language known to vary cross-linguistically, like morphosyntax or phonology, may be a response to the environment in which human groups live possibly mediated by some kind of genetic changes."