IB Biology HL 2.1.9 Genetic-code sequence analysis Question Bank

Practise IB Biology HL 2.1.9 by analysing codon sequences and amino-acid outcomes from genetic-code data.

Exam points

Translate mRNA codons to identify amino-acid sequences.
Evaluate alternative base sequences and their resulting polypeptides.

[Maximum number: 1]

Which sequence of mRNA bases and amino acids could be produced by transcription and translation of the DNA molecule shown?

3' AAAGTGGCACGTATATTT 5'
5' TTTCACCGTGCATATAAA $3^{\prime}$

Table for Question D1.2.9—Using genetic code table question 1 — IB Biology HL

Sequence of mRNA bases

Sequence of amino acids

UUU-GAG-GCU-CGA-UAU-UUU

Phe-Glu-Ala-Arg-Tyr-Phe

AAA-CUC-CGA-GCU-AUA-UUU

Lys-Leu-Arg-Ala-lle-Phe

UUU-CAC-CGU-GCA-UAU-AAA

Phe-His-Arg-Ala-Tyr-Lys

AAA-GUG-GCA-CGU-AUA-UUU

Lys-Val-Ser-Arg-Ile-Phe

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D1.2.9—Using genetic code table question 1