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Multiple Choice
Which of the following habitats is most likely to harbor the most recently diverged species?
A
An isolated island with unique environmental conditions
B
A large, stable continental forest
C
A deep ocean trench with little environmental change
D
A widespread grassland with high gene flow
Verified step by step guidance
1
Understand the concept of speciation: Speciation occurs when populations of a species become isolated and evolve independently due to genetic, environmental, or reproductive barriers. Isolation is a key factor in promoting divergence.
Analyze the options provided: Each habitat has different characteristics that influence the likelihood of species divergence. For example, isolated environments often limit gene flow and create unique selective pressures.
Evaluate the role of isolation: An isolated island with unique environmental conditions is more likely to harbor recently diverged species because geographic isolation reduces gene flow and allows populations to adapt to specific environmental conditions, leading to speciation.
Consider environmental stability: Habitats like a large, stable continental forest or a deep ocean trench with little environmental change are less likely to promote rapid speciation because stable environments often maintain existing species rather than driving divergence.
Assess the impact of gene flow: A widespread grassland with high gene flow is less likely to harbor recently diverged species because gene flow homogenizes genetic differences between populations, reducing the likelihood of speciation.