From Science Daily:
The human brain expanded dramatically in size during evolution, imparting us with unique capabilities. Scientists have now shown that it’s possible to pick out key changes in the genetic code between chimpanzees and humans and visualize their respective contributions to early brain development in mouse embryos. The findings may lend insight what makes the human brain special and why people get some neurological disorders, such as autism and Alzheimer’s disease, whereas chimpanzees don’t.
See full story here. Scientists brought in one single human gene into a mouse embryo, which subsequently develop larger brains than normal in mice. It has yet to be seen whether such mouse is actually smarter than ordinary mice. Nevertheless, this kind of research could lead to uplifting of animals.