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Unit #6, Quiz #4

Unit #6, Quiz #4. Grade:. «grade». «subject». Subject:. «date». Date:. 1. During which period did homonids first evolve. A. tertiary. B. quaternary. C. jurassic. D. cambrian. 2. After a mass extinction the empty niches will eventually (1 to 10 million years) be filled by new

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Unit #6, Quiz #4

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  1. Unit #6, Quiz #4 Grade: «grade» «subject» Subject: «date» Date:

  2. 1 During which period did homonids first evolve A tertiary B quaternary C jurassic D cambrian

  3. 2 After a mass extinction the empty niches will eventually (1 to 10 million years) be filled by new species. This is called A adaptive radiation B homologous structures C analogous structures D repressive radiation

  4. 3 Approximately how old is the Earth A 3.6 billion years old B 4.57 billion years old C 6,000 thousand years old D 22.589 million years old

  5. 4 All of the following are pre-zygotic reproductive barriers EXCEPT: A temporal isolation B mechanical barrier C habitat isolation D hybrid breakdown

  6. 5 Small variations within a population, such as a bacteria's resistance to antibiotics, is called: A homology B gene pools C macroevolution D microevolution

  7. 6 Which of the following is an example of a genetic bottleneck: A A species of darker-colored mice survive predation from owls & falcons, causing the population as a whole to shift to a darker color. B A group of migratory birds stop on an island and never leave. They cease their migration & evolve into their own species. C A group of horses with long necks randomly survive a brush fire that wipes out much of the population. These long-necked horses eventually evolve into giraffes D A trolling net scoops up an entire school of anchovies, reducing the population by a small percent.

  8. 7 Which of the following is the driving force behind artificial selection: A To allow normally unsuccessful traits to propagate B To allow the most reproductively successful traits to be propagated C To select ideal genetic traits D To allow the most successful traits to survive on their own

  9. 8 A group of Atlantic cod migrate to the Pacific & spread their genes to the Pacific population. When considering the Pacific population this is an example of: A genetic immigration B genetic emmigration C genetic drift D founder effect

  10. 9 The following image represents: A analogous structures B homologous structures C comparative embriology D population genetics

  11. 10 Which of the following is not a requirement for Natural Selection: A The trait must be improved upon during the life of the population/organism B The trait must be heritable C Differential reproduction D Genetic variability

  12. 11 Most genetic mutations A are helpful to a species B are harmful to a species C have no effect on a species D give most species super powers

  13. 12 The bone structure of the human arm and the bone structure of the pectoral flipper of a porpoise are very similar. This is an example of A co-evolution B homologous structures C analogous structures D microevolution

  14. . 13 Which of the following organisms would likely be found during the Cambrian Period: A a lamprey B an octopus C a slug D a shark

  15. 14 Which of the following is the geological time that we are currently in: A Pleistocene B Oligocene C Pliocene D Holocene

  16. 15 Zonkeys & Zorses are the offspring of zebras & horses or zebras & donkeys. These offspring are sterile, meaning they are/have... A mechanical isolation B gametic isolation C reduced hybrid fertility D reduced hybrid viability

  17. 16 Organisms that breed during different times of the year are isolated by: A Behavioral Isolation B Habitat isolation C Post-zygotic barriers D Temporal Isolation

  18. 17 Which of the following is NOT a factor that favors fossilization: A The species exists in a small population B The organism is small and has a chitin exoskeleton C The organism gets buried under biological snow D The organism lived through several geological time periods

  19. 18 Which of the following geological periods is characterized by the growth of life zones requiring stability, such as coral reefs. A Cambrian B Silurian C Devonian D Triassic

  20. 19 A change in allelic frequency due to random chance is the definition of: A gene flow (immigration) B gene flow (emmigration) C genetic drift D founder effect

  21. 20 Which of the following is UNTRUE about evolution: A All species descend from earlier ancestral species B The genetic makeup of an individual must change over time C The genetic makeup of a population will change over time D It is the accepted scientific explanation of how animals adapt and survival

  22. 21 A certain species of mouse is the prey of owls. These mice range in fur color from light to dark. For whatever reason, all of the mice except for the darkest are easily spotted by the owls. Over several generations, which type of natural selection would this population of mice undergo. A Directional selection B Diversifying selection C Stabilizing selection D Eliminating selection

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