Revertant

REVERTANT - See BACK MUTATION.
RIBONUCLEASE (RNase) - An enzyme which catalyzes the hydrolysis of RNA. There are many different RNases, some of the more important include: ...
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Revertant: See Back Mutation.
RFLP: Restriction fragment length polymorphism; the acronym is pronounced "riflip". Although two individuals of the same species have almost identical genomes, they will always differ at a few nucleotides.
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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.
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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.
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Immortal revertant clones also appeared among senescent cells maintained in MX medium to retain introduced chromosome. These revertant clones seem to arise due to deletions in donor chromosomes.
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making 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 ...
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