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 natural selection increases alleles linked to higher survival or reproduction, changing allele frequencies over generations.
  • Relate mutation, recombination and Mendelian inheritance to neo-Darwinian changes in allele frequency.

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.

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