February/March 2026 Paper 12

2026 · 40 questions · 40 parts · 40 marks

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27Transcription Translation Protein SynthesisMedium1 mark
A gene from a eukaryote is inserted into the DNA of a bacterium. The bacterium is not able to synthesise the polypeptide coded for by the eukaryotic gene.
Which statements explain why the bacterium is not able to synthesise the polypeptide?
  1. 1
    The mRNA produced by the bacterium is different from the mRNA produced by the eukaryote.
  2. 2
    Eukaryote genes contain non-coding sequences that are absent from bacterial genes.
  3. 3
    There are differences in the genetic code between bacteria and eukaryotes.