doi: 10.1126/science.182.4116.1024.
Electrophoretic variation in Escherichia coli from natural sources
- PMID: 4584002
- DOI: 10.1126/science.182.4116.1024
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Electrophoretic variation in Escherichia coli from natural sources
Science.
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Abstract
At each of five loci in 829 Escherichia coli clones from 156 samples from diverse natural sources, electrophoretic analysis reveals a prominent mobility class (frequency over 0.70) and 2 to 11 distinct mobility classes at lower frequencies. The frequency distribution of the classes argues against the importance of neutral mutations in allozymic variation. Heterosis is not the universal cause of genic polymorphism.
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