Re-recommending it with a note that suggests that you use "cpunk" for username and password when this link gives you a username/password prompt.

Language is a uniquely human trait likely to have been a prerequisite for the development of human culture. The ability to develop articulate speech relies on capabilities, such as fine control of the larynx and mouth, that are absent in chimpanzees and other great apes.

FOXP2 is the first gene relevant to the human ability to develop language.

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Molecular evolution of FOXP2, a gene involved in speech and language