7b- Population Genetics- Speciation

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Across
  1. 3. occurs when plants have an extra set of chromosomes, resulting in the inability to mate with those who do not have the same number of chromosomes
  2. 8. formation of a new species
  3. 9. ___ isolation occurs when organisms attempt to mate but they fail due to anatomical differences
  4. 11. ___ isolation occurs when species reproduce at different times or seasons
  5. 13. occurs when species evolve slowly over time and leave many fossils
  6. 14. a type of isolation where there is a physical barrier between members of a population
  7. 15. ___ speciation occurs when new species arise due to a physical barrier
Down
  1. 1. ___ speciation occurs when a new species arises without a physical barrier
  2. 2. type of barrier that prevents fertilization and a zygote from forming
  3. 4. speciation begins with ___- the two gene pools must become separated
  4. 5. ___ equilibrium occurs when species evolve rapidly and do not leave fossils
  5. 6. __ isolation occurs when courtship rituals are unique to a species and will only attract females of the same species
  6. 7. ___ isolation prevents the fusion of gametes of different species
  7. 10. a group of organisms that breed with one another and produce fertile offspring
  8. 12. ___ isolation occurs when two species live in different habitats within the same area- they rarely encounter each other