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IB Biology HL 1.3.7 Mutation, variation and evolutionary evidence Question Bank

Practise IB Biology HL 1.3.7 by analysing how mutation contributes to variation across sexual and asexual reproduction.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Compare how mutation, crossing over and independent assortment contribute to variation in different reproduction modes.
  • Analyse whether a variant is heritable and therefore available for selection.
  • Evaluate a population-variation claim using genome, inheritance and environmental evidence.

D1.3.7—Mutation as source of variation question 1

[Maximum number: 1]

What causes variation in both sexually and asexually reproducing organisms?

A

Mutations

B

Polygenic inheritance

C

Crossing over

D

Independent assortment

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