The Smartest Rat in the World

Hobbie-J is no ordinary rat. In fact, thanks to the modification of a single gene, he’s probably (33)______ intelligent rat in the world. The rodent, named after a Chinese cartoon character, (34)______ as an embryo with genetic material. As a result, Hobbie-J can remember objects for three times as long as his contemporaries, and is far (35)______ than other rats at negotiating mazes. Since the technique (36)______ previously to work on mice, the researchers are optimistic that it could be successfully applied to a wide variety of other species — possibly (37)______ humans.