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IB Biology SL 4.1.6 Traits must be heritable Question Bank

Practise IB Biology SL 4.1.6 by explaining why genetic variation and heritable advantageous traits are required for natural selection.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Identify genetic variation and heritable advantageous traits as requirements for natural selection.
  • Explain why acquired characteristics are not inherited through natural selection.

D4.1.6—Traits must be heritable question 1

[Maximum number: 1]

What is required for natural selection to occur?

I. Acquired characteristics
II. Advantageous characteristics
III. Genetic variation

A

I only

B

I and III only

C

II and III only

D

I, II and III

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