Mechanisms Of Speciation

Allopatric Speciation occurs through which process:

• A.

  Polyploidy

• B.

  Geographical separation

• C.

  Gene flow

• D.

  Sexual selection

The two forms of polyploidy are:

• A.

  Chromosomal nondisjunction

• B.

  Interspecies breeding

• C.

  Adaptive radiation

• D.

  Sympatric speciation

Animals are not tolerant of polyploidy.

• A.

  True

• B.

  False

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

Sympatric Speciation only occurs through abrupt changes.

• A.

  True

• B.

  False

An alloploid has at least _____ set of chromosomes from two or more different species.

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.

_______ zones are places where two populations are able to interact and interbreed

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