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D4.1.15 (HL)—Artificial selection

Artificial selection occurs when humans choose which individuals breed, increasing desired heritable traits over generations in evolving populations in evolving populations.

Syllabus
First assessment 2025
Objective
D4.1.15
Level
HL

Concept essentials

  • Artificial selection is human-directed selective breeding.
  • Only heritable traits can respond reliably to artificial selection.
  • Repeated selection can increase desired traits but may reduce genetic diversity.
ConceptIB Biology HL