Pseudorevertant
A revertant that retains the original mutation but has a second mutation at a different site that partially or fully restores the wild-type phenotype. See suppressor.
The revertants Hall found fell into three different classes (I, II and III). Class III grew the fastest (wild type rate), Class II grew slower and class I grew the slowest.
PSEUDOREVERTANT - A mutant virus or organism which has recovered a wildtype phenotype due to a second-site mutation (potentially located in a different region of the genome, or involving a different polypeptide) which has eliminated the effect of the ...
it unable to synthesize the amino acid histidine (His) from the ingredients in its culture medium. However, some types of mutations (including this one) can be reversed, a back mutation, with the gene regaining its function. These revertants ...
 See also: Mutation, Bacteria, Cells, DNA, Amino acid
  
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