 Many other genes have been discovered which did evolve by gene duplication followed by a frameshift mutation affecting at least part of the gene.A 1995 paper showed that scientists have also been able to induce another species of bacterium, "Pseudomonas aeruginosa", to evolve the capability to break down the same nylon byproducts in a laboratory by forcing them to live in an environment with no other source of nutrients.The "P. aeruginosa" strain did not seem to use the same enzymes that had been utilized by the original "Flavobacterium" strain.