Evolution

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Across
  1. 5. polypoid formed between two related but separate species
  2. 6. a barrier that is reproductive isolation mechanism that occurs before zygote formation
  3. 10. a barrier that is reproductive isolation mechanism that occurs after zygote formation
  4. 11. offspring of two related individual
  5. 13. barrier
  6. 14. condition of a cell having an extra chromosome or missing a chromosome for its species
  7. 15. evolution process by which groups of organisms evolve in diverse directions from a common point
  8. 16. allopatric speciation occurs when members move
Down
  1. 1. selection reproduction of individuals with favorable genetic traits that survive environmental change because of those traits, leading to evolutionary change
  2. 2. genetic differences among individuals
  3. 3. formation of a new species
  4. 4. heritable trait or behavior
  5. 7. continued speciation divergence
  6. 8. zone area where two closely related species interact
  7. 9. a group of populations
  8. 12. barrier occurring when closely related individuals of different species mate, but differences in their gamete cells (eggs and sperm) prevent fertilization from taking place