A4.1 Evolution and speciation

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Across
  1. 2. type of isolation where courtship behaviour prevents the hybridization of closely related species
  2. 5. the formation of new species through evolution.
  3. 7. type of speciation that occurs when when a population divides into different species while inhabiting the same habitat.
  4. 10. type of isolation that occurs due to organisms reproducing at different times, resulting in reproductive isolation
  5. 13. type of evolution where species sharing a common ancestry become more distinct due to differential selection pressure leading to speciation
  6. 14. a group of the same species living in the same area at the same time
  7. 15. the variety of organisms in a ecosystem.
  8. 17. a group of organisms that can interbreed and produce fertile offspring
  9. 18. change in heritable characteristics
Down
  1. 1. a form of sympatric speciation results in more than two sets of homologous chromosomes and occurs most commonly in plants as a result of errors during meiosis.
  2. 3. type of speciation that occurs due to geographical isolation
  3. 4. different structures with the same function
  4. 6. offspring of two different species
  5. 8. type of isolation that occurs when physical differences between organisms prevent sexual intercourse.
  6. 9. similar structure difference function
  7. 11. last name of the biologist that proposed the theory of natural selection
  8. 12. type of breeding where humans choose the organism with favourable trait to breed to produce offspring that can inherit the trait
  9. 16. type of limb that is an example of homologous structure