I am reading on wikipedia that a certain mutation in the "Ectodysplasin A receptor" known as rs3827760 or 370A is responsible for the sinodont dentition pattern in East Asians as well as affecting breast size, causing thicker hair and "reduced chin protrusion".
Question: In what way, if any, does this mutation affect brain size and intelligence?
Does this mutation cause any other evolutionary advantages?
One would expect that humans have gone through a series of mutations affecting our skull, making it less robust and causing us to have weaker jaws than apes, but then making room for a larger and more well developed brain.
