Multiple Choice
How does reproductive isolation differ between sympatric and allopatric modes of speciation?
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23. Speciation
Allopatric and Sympatric Speciation
Multiple Choice
Which of the following factors would be the most likely to contribute to allopatric speciation?
A
Temporal isolation
B
Ecological isolation
C
Geographic isolation
D
Behavioral isolation
Verified step by step guidance1
Understand the concept of allopatric speciation: Allopatric speciation occurs when a population is divided by a geographical barrier, leading to the formation of new species due to physical separation.
Identify the key factor in allopatric speciation: Geographic isolation is the primary factor that contributes to allopatric speciation, as it physically separates populations, preventing gene flow.
Differentiate between types of isolation: Temporal, ecological, and behavioral isolation are forms of reproductive isolation that occur without physical separation, thus they are not the main contributors to allopatric speciation.
Recognize the role of geographic barriers: Geographic barriers such as mountains, rivers, or distances can lead to populations evolving independently, eventually resulting in speciation.
Conclude why geographic isolation is the most likely factor: Since allopatric speciation is defined by physical separation, geographic isolation is the most direct and likely contributor to this process.
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