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Which of the following could result in speciation due to biogeographic isolation?
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23. Speciation
Introduction to Speciation
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Which of the following best defines speciation?
A
The extinction of a species due to environmental changes.
B
The process by which new species arise from existing species.
C
The movement of individuals from one population to another.
D
The gradual change in allele frequencies within a population over time.
Guida verificata passo dopo passo1
Step 1: Begin by understanding the term 'speciation.' Speciation refers to the evolutionary process through which new species arise from existing species. This typically involves genetic divergence and reproductive isolation.
Step 2: Analyze the provided options. The first option, 'The extinction of a species due to environmental changes,' does not describe speciation but rather the loss of a species.
Step 3: Evaluate the second option, 'The process by which new species arise from existing species.' This aligns with the definition of speciation and is likely the correct answer.
Step 4: Consider the third option, 'The movement of individuals from one population to another.' This describes gene flow, not speciation.
Step 5: Review the fourth option, 'The gradual change in allele frequencies within a population over time.' This describes microevolution, not speciation. Confirm that the second option is the best definition of speciation.
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