Mutations are one of the two "evolutionary mechanisms" proposed by neo-Darwinism. It is suggested that these chance modifications to DNA caused living things to evolve. Thousands of mutation experiments have been performed to back up this claim. Some populations of living things, fruit flies in particular, have been subjected to intense mutation. Evolutionist publications portray these mutation experiments as "laboratory evidence of evolution." Yet the fact is that far from confirming evolution these experiments have actually undermined it. In not one living thing exposed to mutation has an increase in its genetic information been observed. On the contrary, mutants (living things exposed to mutation) are always deformed, sterile and sickly. (see Mutations)