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Isolations Hardy Weinberg Finch Speciation
Contributed by: Alexander
  • 1. A group of similar organisms that can interbreed and produce viable, fertile offspring is a...?
A) community
B) clade
C) species
D) organisms
  • 2. Mechanisms that restrict gene flow are what type of isolating mechanisms?
A) hybrid inviability
B) hybrid sterility
C) prezygotic
D) reproductive
  • 3. If the geographic ranges of two species overlap but their needs or breeding requirements differ significantly this results in what type of isolation?
A) behavioral
B) mechanical
C) gametic
D) ecological
  • 4. If breeding seasons differ then organisms can experience what type of isolation?
A) gametic
B) temporal
C) behavioral
D) ecological
  • 5. If complex courtship rituals are performed by a species what type of reproductive isolation may they experience?
A) temporal
B) mechanical
C) gametic
D) behavioral
  • 6. Morphological differences can cause what type of reproductive isolation?
A) behavioral
B) mechanical
C) ecological
D) gametic
  • 7. If organisms are separated by a river, mountains, or other physical feature of the earth, what type of reproductive isolation may occur?
A) geographic
B) gametic
C) mechanical
D) behavioral
  • 8. If the egg and sperm of two species are incompatible, what type of reproductive isolation occurs?
A) gametic
B) ecological
C) behavioral
D) mechanical
  • 9. The change in the frequencies of alleles in a gene pool is ...?
A) mutation
B) genetic equilibrium
C) microevolution
D) extinction
  • 10. The Hardy-Weinberg principle says that evolution will occur unless how many conditions are met?
A) 7
B) 10
C) 9
D) 8
  • 11. Which of the following is a condition that must be met for no evolution to occur?
A) mating is random
B) no natural selection happens
C) no mutations happen
D) all of these answers
  • 12. What did Darwin hypothesize about the finches on the Galapagos?
A) Their beak sizes changed as the weather changed.
B) They all had beaks for breaking hard seeds.
C) They all were going extinct.
D) They all descended from a common ancestor.
  • 13. What did Darwin say had caused the finches to have different beak sizes?
A) gene pools
B) reproductive isolation
C) Natural selection
D) the weather
  • 14. Why did the finches on the Galapagos need different sizes of beaks?
A) They built different nests.
B) They ate different foods.
C) They mated with different species.
D) They flew to different islands.
  • 15. Which of the following is a testable assumption on which Darwin's hypothesis about the Galapagos finches was based?
A) Finches attract mates through courtship rituals.
B) Finches were blown by a storm from the mainland.
C) Finches all eat the same type of food.
D) Beak differences must cause differences in fitness.
  • 16. How did the Grants test Darwin's assumptions?
A) They did laboratory experiments that proved Darwin was right.
B) They observed natural selection in action.
C) They gave the birds different foods so their beak sizes would change.
D) They caught and measured every bird on the island for thirty years.
  • 17. What type of evolution does the Grants data support?
A) microevolution
B) Darwiniaism
C) macroevolution
D) mutation
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