In 1946, Hermann J. Muller, Nobel Prize winner and founder of the study of mutation genetics, claimed: “Not only is this accumulation of many rare, mainly tiny changes the chief means of artificial animal and plant improvement, but it is, even more, the way in which natural evolution has occurred, under the guidance of natural selection. ”
मलर यांनी असे प्रतिपादन केले: “या क्वचित घडून येणाऱ्‍या, सूक्ष्म बदलांच्या संचयाकरवीच मनुष्याला वनस्पती व प्राण्यांच्या सुधारित जाती कृत्रिमरित्या उत्पन्‍न करणे शक्य झाले आहे.