Gene exchange and natural selection cause Bacillus subtilis to evolve in soil culture

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Science  11 May 1979:
Vol. 204, Issue 4393, pp. 637-639
DOI: 10.1126/science.107592


Strains of Bacillus subtilis exchange linked blocks of genes when growing together in soil; such exchange leads to extensive reorganization of the genotypic structure of the population and to the appearance and eventual dominance of a single phenotype. This process illustrates how recombination and selection lead to adaptive changes in populations.

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