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. 1990 Nov;126(3):505-17.
doi: 10.1093/genetics/126.3.505.

Molecular evolution of the Escherichia coli chromosome. III. Clonal frames

R Milkman  1 , M M Bridges
Affiliations

Molecular evolution of the Escherichia coli chromosome. III. Clonal frames

R Milkman et al. Genetics. 1990 Nov.

Erratum in

  • Genetics 1990 Dec;126(4):1139

Abstract

PCR fragments, 1500-bp, from 15 previously sequenced regions in the Escherichia coli chromosome have been compared by restriction analysis in a large set of wild (ECOR) strains. Prior published observations of segmental clonality are confirmed: each of several sequence types is shared by a number of strains. The rate of recombinational replacement and the average size of the replacements are estimated in a set of closely related strains in which a clonal frame is dotted with occasional stretches of DNA belonging to other clones. A clonal hierarchy is described. Some new comparative sequencing data are presented.

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