Unit 7 Crossword

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Across
  1. 5. The type of speciation that occurs when two groups are physically separated
  2. 9. Structures that look different but have the same function
  3. 11. The theory by which individuals continuously, slowly evolve
  4. 13. The study of development of embryos from fertilization to birth
  5. 14. Selection that favors one extreme of a trait
  6. 15. The type of evolution where unrelated species evolve similar traits due to similar selective pressures
Down
  1. 1. Structures that look the same but have different functions
  2. 2. The process by which one species splits into two
  3. 3. When an organism has more than two sets of chromosomes
  4. 4. An effect caused by a sudden reduction of the population, normally due to natural/human-caused disasters
  5. 6. The type of speciation that occurs when two groups are in the same geographic area (speciation caused by something other than geography)
  6. 7. A random change in a DNA sequence
  7. 8. The type of isolation caused by physical barriers
  8. 10. The process by which species change over time
  9. 12. A trait that increases an organism's fitness