Biology, 10.12.2019 19:31 catboy7196

In the ames test, the appearance of his+ revertants in the presence of a non-mutagenic control compound indicates that
a. there is some low-level contamination in most experiments
b. the growth medium contains factors that are mildly mutagenic
c. some of the reversion mutations are not caused by the mutagen being tested
d. liver extract increases the potency of some mutagens

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In the ames test, the appearance of his+ revertants in the presence of a non-mutagenic control compo...