question 11 (1 point)\nwhat kind of mutation is shown in the image below?\nnormal sequence\nmutated…

question 11 (1 point)\nwhat kind of mutation is shown in the image below?\nnormal sequence\nmutated sequence\ndna (coding strand)\ntranscription\nmrna\ntranslation\namino acid sequence\nmet\nlys\nphe\ngly\nstop\nmet\nstop\na. missense mutation\nb. nonsense mutation\nc. silent mutation\nd. deletion\ne. translocation\na\nb\nc\nd\ne

question 11 (1 point)\nwhat kind of mutation is shown in the image below?\nnormal sequence\nmutated sequence\ndna (coding strand)\ntranscription\nmrna\ntranslation\namino acid sequence\nmet\nlys\nphe\ngly\nstop\nmet\nstop\na. missense mutation\nb. nonsense mutation\nc. silent mutation\nd. deletion\ne. translocation\na\nb\nc\nd\ne

Answer

Brief Explanations:

  1. Analyze the normal and mutated sequences: In the normal sequence, translation produces multiple amino acids (Met, Lys, Phe, Gly, then Stop). In the mutated sequence, the mRNA has a codon (UAG) that is a stop codon, causing translation to stop early after Met.
  2. Recall mutation types:
    • Missense: changes one amino acid to another.
    • Nonsense: changes a codon to a stop codon, truncating the protein.
    • Silent: no change in amino acid.
    • Deletion: removes nucleotides.
    • Translocation: moves genetic material between non - homologous chromosomes.
  3. The mutation here creates a stop codon prematurely, so it's a nonsense mutation.

Answer:

B. nonsense mutation