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Which of this mode of trp regulation is not possible in eukaryotes?

Which of this mode of trp regulation is not possible in eukaryotes? Correct Answer Attenuation of trp

Attenuation of trp is based on ribosomal stalling at two trp codons which leads to the formation of attenuation loop. This is only possible for co-transcriptional translation which is absent in eukaryotes.

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