The ebg (evolved β galactosidase) regulatory locus has been mapped. The map order is argG-ebgA-ebgR-tolC-metC, and there is 1.6% recombination between ebgR and ebgA. Studies with ebgR-/ebgR+ merodiploids have shown that ebgR- is recessive, and it is concluded that the synthesis of ebg enzyme is under negative control.
CITATION STYLE
Hall, B. G., & Hartl, D. L. (1975). Regulation of newly evolved enzymes II. The EBG repressor. Genetics, 81(3), 427–435. https://doi.org/10.1093/genetics/81.3.427
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