Multiple Choice
Which evolutionary process occurs when a founding population becomes biogeographically isolated from the rest of its species?
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48. Ecology
Biogeography
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Which best describes biogeographic isolation?
A
The physical separation of populations by geographic barriers, leading to limited gene flow between them.
B
The adaptation of organisms to similar environments in different parts of the world.
C
The migration of individuals between different ecosystems.
D
The extinction of species due to competition with invasive species.
Verified step by step guidance1
Understand the concept of biogeographic isolation: It refers to the physical separation of populations by geographic barriers, such as mountains, rivers, or oceans, which restrict gene flow between them.
Analyze the options provided in the problem. The correct description should align with the definition of biogeographic isolation.
Option 1: 'The physical separation of populations by geographic barriers, leading to limited gene flow between them' matches the definition of biogeographic isolation.
Option 2: 'The adaptation of organisms to similar environments in different parts of the world' describes convergent evolution, not biogeographic isolation.
Option 3: 'The migration of individuals between different ecosystems' and Option 4: 'The extinction of species due to competition with invasive species' are unrelated to biogeographic isolation. Eliminate these options.
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