IB Biology HL D4.1.11 Hl Changes in Allele Frequency Questions

Trace how inherited variation and selection for survival or reproduction change allele frequencies through neo-Darwinian evolution.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Explain how selection raises an allele’s frequency when it improves survival or reproductive success.
  • Describe how mutation can produce a resistance allele that natural selection then favours.

IB Biology HL D4.1.11 Hl Changes in Allele Frequency Questions question 1

[Maximum number: 4]

If a wild population of cats contained both curled ears and normal ears, explain how the proportion of these two phenotypes could change in the population.

All question bank results loaded