"Bacteria, the study of which has formed a great part of the foundation of genetics and molecular biology, are the organisms which, because of their huge numbers, produce the most mutants. This is why they gave rise to an infinite variety of species, called strains, which can be revealed by breeding or tests. Like Erophila verna, bacteria, despite their great production of intraspecific varieties, exhibit a great fidelity to their species. The bacillus Escherichia coli, whose mutants have been studied very carefully, is the best example. The reader will agree that it is surprising, to say the least, to want to prove evolution and to discover its mechanisms and then to choose as a material for this study a being which practically stabilized a billion years ago!"
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Original Language: English
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Sources
Pierre P. Grassé, Evolution of Living Organisms: Evidence for a New Theory of Transformation (1977), p. 87
https://en.wikiquote.org/wiki/Escherichia_coli
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Escherichia coli
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