Edexcel IGCSE Biology 3.16B Codons & amino acids
Practise using DNA base-pairing and triplet codes to link base sequences with amino acids, including double-helix strand questions.
- Syllabus
- First assessment 2019
- Course
- Biology 4BI1
Exam points
- complete complementary DNA strands using A-T and C-G base-pairing from a diagram
- calculate how triplets of four DNA bases can code for at least 20 amino acids
3.16B DNA structure question 1
[Maximum number: 1]
The sequence of bases on one strand of a section of DNA is
TAC CGT AAT TAT
Which of these is the complementary sequence of DNA on the other strand of the double helix?
A
ATG GCA TTA ATA
B
AUG GCA UUA AUA
C
CGT TAC GGC CGC
D
CGU UAC GGC CGC
A
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