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H1 Biology 8876 · Nov 2023BiologyPaper 1Most challenging

Paper 1 Q26 — Who does natural selection benefit?

Evolution — selection raises alleles that benefit individuals’ survival/reproduction, not ‘the population’

What the examiners said

“Many candidates selected option D, which represents the common misconception that the result of natural selection is to increase the frequency of alleles that benefit populations rather than individuals.”

Try the question

Which statement correctly describes the outcome of natural selection?
Examiner report: “Many chose the 'benefits the population rather than individuals' misconception (option D).”

Explore — selection acts on individuals

Run selection on a population with two alleles. The allele that raises individual reproductive success rises — even set a ‘good for the group’ allele that costs individuals and watch it fall.

Set a negative value: an allele that hurts individual fitness declines even if you imagine it ‘helping the population’. Selection has no group-level foresight.

Original reconstruction inspired by the misconceptions described in the Singapore-Cambridge GCE A-Level H1 Biology 8876 November 2023 Examiner Report. Not the actual examination question. For classroom exploration.

Made by lookang, using Claude Fable 5. More resources: iwant2study.org