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Pronunciation varies by accent · noun
(microbiology) Reversion to the growth factor requirements of an ancestral strain..
Berrie [ 254 ] found that the incubation temperature of the colon bacillus has an influence on the incidence of the mutations returning to prototrophism and streptomycin independence
These strains enable recording of reverse mutations from auxotrophism on tryptophan to prototrophism .
Auxotrophic mutant strains are readily obtained but they should always be tested for reversion to prototrophism before use.
Bacteria vary greatly in their food requirements from extreme examples of prototrophism and autotrophism to extreme parasitism.
The segregation of some markers ( as, for instance, a nutritional requirement versus prototrophism ) is evident only after the examination of the clones derived from the single spores, but the allele segregation has in any case occurred before spore formation.
Use prototrophism when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Prototrophism means (microbiology) Reversion to the growth factor requirements of an ancestral strain..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Berrie [ 254 ] found that the incubation temperature of the colon bacillus has an influence on the incidence of the mutations returning to prototrophism and streptomycin independence
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