CAIE A-Level Biology AS 6.2.2 Universal Genetic Code and Codons Questions
Explain how codons specify amino acids under the universal genetic code, using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Explain the universal genetic code and how codons specify amino acids.
CAIE A-Level Biology AS 6.2.2 Universal Genetic Code and Codons Questions question 1
[Maximum number: 1]
The mRNA codons ACU, ACC, ACA and ACG all code for the same amino acid, threonine.
Which anticodons could specify an amino acid other than threonine?
1 UCA
2 ACC
3 UGU
4 UGC
A
1,3 and 4
B
1 and 2
C
2 and 3
D
3 and 4 only
B
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