Biodiversity - Topics 6, 7 and 8

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Across
  1. 1. In the last 600 million years there have been _____ major declines in Earth's biodiversity
  2. 6. Insect that was predominantly light coloured prior to the Industrial Revolution
  3. 8. Fish farming
  4. 9. Another term for a genetically modified organism
  5. 12. Species that no longer exists on Earth
  6. 14. Natural selection: Variations that are passed on lead to changes in the ________ characteristics of a species
  7. 15. Number of division in meiosis
  8. 16. Scientist who proposed and developed natural selection
  9. 18. Technique whereby individual organisms with desirable traits are bred together to develop plants or animals with specific traits (cows that produce large quantities of milk)
  10. 22. Global ________ have been drawn up to protect endangered plants and animals
  11. 23. Natural selection: All organisms produce more ________ than can possibly survive
  12. 25. Number of division in mitosis
Down
  1. 2. The extinction of a species from specific geographic areas
  2. 3. Name of Darwin's boat
  3. 4. The artificial introduction of genes from one organism into the genetic material of another
  4. 5. Evolutionary process whereby organisms best adapted to their environment will survive and reproduce
  5. 7. Collection of seeds from plants that are threatened with extinction
  6. 10. Synonym for artificial selection
  7. 11. Using or modifying living organisms to make marketable products
  8. 13. Species who is sensitive to changes in it's environment
  9. 17. Natural selection: There is incredible __________ within each species
  10. 19. Hormone in the body that lowers the level of glucose in the blood
  11. 20. Asexual reproduction of cells that results in the production of two identical daughter cells (chromosome count is the same at the start and at the end)
  12. 21. Sexual reproduction of cells that results in the production of four new genetically different daughter cells (chromosome count is halved from start to end)
  13. 24. Natural selection: Variations increase the chances of an organism surviving to _________