Exposure of dark-grown, wild-type Euglena gracilis to light induces the formation of at least three new chromatographic species of tRNA. Parallel studies with a bleached mutant (W(3)BUL) of Euglena demonstrate that the induction of these new tRNA species is dependent upon the cell's ability to form chloroplasts and rule out the possibility that the new species arise from an effect of light on the tRNA's per se.
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Barnett et al. (1969) studied this question.
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