IB Biology HL D1.2.9 Using Genetic Code Table Questions

Explore how mRNA codons are read in order and matched to amino acids when analysing transcription-to-translation sequence questions in IB Biology HL D1.2.9.

Exam points

Convert a template-DNA sequence to its complementary mRNA sequence before consulting the genetic code table.
Read mRNA codons in the 5′→3′ direction and use the genetic code table to identify the corresponding amino acids.
Check a complete DNA→mRNA→polypeptide representation and justify the resulting amino-acid sequence.

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Study D1.2.9—Using genetic code table conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

[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 IB Biology HL D1.2.9 Using Genetic Code Table Questions 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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IB Biology HL D1.2.9 Using Genetic Code Table Questions question 1