Dear language geeks,
Did you know that Scottish scientists have discovered a striking link between genes for brain size and tonality in spoken language? Nontonal speakers, which is what most people reading this are, have mutations in genes called ASPM and Microcephalin. These two genes are known to affect brain size during embryonic development. The mutations are relatively new -they began to appear approximately 37,000 years ago. This is apparently the first time we've had any evidence that there is a genetic aspect to language.
So, what do you folks think of this?