Reversing Evolution with a Legless Mouse
Hundred million years ago the snake came into existence, by slowly going from an animal with limbs to the slithering creature as we know it today. You might think that evolution worked the other way around, but if you take an x-ray of a phyton or a boa constrictor you can still see rudimentary legs in their bodies. Scientist are now trying to reverse evolution by inserting the mutated leg snake DNA into the DNA of a mouse. The test result is striking: a mouse without limbs.