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IB Biology SL 1.2.9 DNA Base Sequence Diversity Question Bank

Practise IB Biology SL 1.2.9 by linking four DNA bases and their order to information storage, genome size and biological diversity.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Explain how four bases and their order create many possible DNA information patterns.
  • Use base-sequence evidence to explain information storage and compare genome complexity.

A1.2.9—Diversity of DNA base sequences question 1

[Maximum number: 1]

What allows DNA to store very large amounts of data?

A

Two strands of DNA

B

Base sequence

C

Complementary base pairing

D

Sugar-phosphate backbone

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