Gene amplification in Paramecium tetraurelia
Gene amplification in Paramecium tetraurelia is an example of gene amplification that has occurred in the unicellular organism Paramecium tetraurelia. Gene duplication occurs in a large number of organisms as part of evolution or as the cause or result of disease (as in the case of the amylase genes in humans, and genes in cancer cells respectively).
Source: Wikipedia — Gene amplification in Paramecium tetraurelia (CC BY-SA 4.0)