Parapatric Speciation and Sympatric Speciation Both Describe How Populations Diverge

question 20

Multiple Choice

Parapatric speciation and sympatric speciation both describe how populations diverge into separate species without a geographic barrier to dispersal. What distinguishes these two modes of speciation?

• A) In parapatric speciation, the populations are adjacent to one another and typically have a hybrid zone between the populations.
• B) In sympatric speciation, the populations are adjacent to one another and typically have a hybrid zone between the populations.
• C) In parapatric speciation, the populations are not adjacent to each other and do not have a hybrid zone.
• D) In sympatric speciation, the populations are not adjacent to each other but do have a hybrid zone.

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