Word Pronunciation & Dictionary

prototrophism

Word Rarity Very rare

Frequency: Zipf frequency 0.00 in modern English

Syllables: pro-totrophism
IPA

22

Scrabble Score

13

Letters

2

Syllables

8

Unique Chars

Meaning

noun

Reversion to the growth factor requirements of an ancestral strain.

Uncountable

noun

The ability to obtain nourishment from a single source, such as iron, sulfur, or sunlight or to undergo anabolism.

Uncountable

Example Sentences

"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."

Etymology

From proto- + -trophism.

Word Breakdown

Prefix: proto
Suffix: trophism

Usage

Uncountable

Questions

What does prototrophism mean?: Reversion to the growth factor requirements of an ancestral strain.
Where does prototrophism come from?: From proto- + -trophism.

How to pronounce prototrophism

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