Mechanisms Of Speciation

10 Questions | Total Attempts: 206

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Mechanisms Of Speciation

Chapter 25. 2 Mechanisms of Specation for GenBioII.


Questions and Answers
  • 1. 
    Allopatric Speciation occurs through which process:
    • A. 

      Polyploidy

    • B. 

      Geographical separation

    • C. 

      Gene flow

    • D. 

      Sexual selection

  • 2. 
    The two forms of polyploidy are:
    • A. 

      Chromosomal nondisjunction

    • B. 

      Interspecies breeding

    • C. 

      Adaptive radiation

    • D. 

      Sympatric speciation

  • 3. 
    Animals are not tolerant of polyploidy.
    • A. 

      True

    • B. 

      False

  • 4. 
    When a tetraploid reproduces with a normal diploid:
    • A. 

      The offspring will have three sets of chromosomes.

    • B. 

      The offspring will be either diploid or tetraploid.

    • C. 

      The offspring will be sterile.

    • D. 

      Trick question. they can't reproduce because they are different species

  • 5. 
    Sympatric Speciation only occurs through abrupt changes.
    • A. 

      True

    • B. 

      False

  • 6. 
    An alloploid has at least _____ set of chromosomes from two or more different species.
  • 7. 
    Which of the following are examples of allopatric speciation?
    • A. 

      Grass adapting to become more tolerant of metal in the soil.

    • B. 

      Two populations of fish that were separated by the Panama landbridge.

    • C. 

      Bees changing their breeding season in accordance with certain flowering seasons.

    • D. 

      Birds being carried by a storm to a distant island.

  • 8. 
    _______ zones are places where two populations are able to interact and interbreed
  • 9. 
    Which of the following is not an example of a gradual change?
    • A. 

      Gene flow

    • B. 

      Random mutations

    • C. 

      Interspecies breeding

    • D. 

      Natural selection

    • E. 

      Change in chromosome number