It sounds, at first, like a plot twist from a zany movie about a mad scientist: What if an eye were transplanted onto a tadpole’s tail? Would the frog in the making be merely a laboratory freak — kind of a Mr. Potato Head of science? Or would the tadpole be able to see out of its backside?
Now, a pair of serious Tufts University biologists have carefully done the experiment, demonstrating for the first time that a blind tadpole can see with an eye bulging from its tail.