Biology  by Bradford
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D4.1 Natural selection: grass skirts

19 quick questions on natural selection, 11 of them at standard level, each answered in a word or two. Print a sheet for each team, a key for the checker and a tick sheet, then tape the sheets to the board and race.

How it runs

  1. SnipA runner cuts one strip off the bottom of their team’s sheet.
  2. Answer as a pairBack at the table, they write the answer on the strip. No books.
  3. Get it checkedThe checker reads it against the key: you, or a student holding it.
  4. Back for the nextA tick earns the next strip. Wrong? Back to the table to try again.

The questions on this sheet

The checker’s key, with every answer, prints with the sheets.
  1. Survival and breeding of the best adapted
  2. Change in a species over many generations
  3. Factor, e.g. predators, favouring a trait
  4. Trait suiting an organism to its habitat
  5. Able to be passed to offspring by genes
  6. All alleles in an interbreeding population
  7. Humans choosing which organisms mate
  8. More young born than can survive
  9. Measure of reproductive success
  10. Mate choice favouring showy traits
  11. Fish whose colours Endler studied
  12. Bacteria no longer killed by a drug
  13. Proportion of one variant of a gene
  14. One extreme phenotype is favoured
  15. Intermediate phenotypes favoured
  16. Both extremes favoured over the middle
  17. p² + 2pq + q² = 1
  18. Dark moths rising in sooty areas
  19. Partners chosen with no preference

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