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Observable: petite

Description
The formation of smaller than wild-type colonies on fermentable carbon sources (e.g., glucose), due to a respiratory defect. The respiratory defect could result from mutation or loss of the mitochondrial genome, or from a nuclear mutation affecting respiration. The fermentation of glucose produces ethanol, which is metabolized by the respiratory pathway in wild-type cells and contributes to colony size; respiratory-deficient mutants are unable to utilize this ethanol.
Qualifiers
increased rate, increased

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Gene Phenotype Experiment Type Mutant Information Strain Background Chemical Details Reference