EVOLUTION
EVOLUTION OF A POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Geographic isolation causes genetic changes in individual organisms and prevents them from interacting.
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Geographic isolation causes genetic changes in individual organisms but allows them to interact.
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Geographic isolation physically separates populations and prevents them from interacting.
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Geographic isolation physically separates populations but allows them to interact.
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Detailed explanation-1: -Which statement best describes how geographic isolation can contribute to land animal speciation? Geographic isolation physically separates populations and prevents them from interacting.
Detailed explanation-2: -How Does Geographic Isolation Cause Speciation? When a population is separated because of a geographic feature, like distance, a canyon, a river, or a mountain range, those two subgroups of the population are no longer able to reproduce together.
Detailed explanation-3: -Scientists think that geographic isolation is a common way for the process of speciation to begin: rivers change course, mountains rise, continents drift, organisms migrate, and what was once a continuous population is divided into two or more smaller populations.
Detailed explanation-4: -Geographic isolation is known to contribute to divergent evolution, resulting in unique phenotypes. Oftentimes morphologically distinct populations are found to be interfertile while reproductive isolation is found to exist within nominal morphological species revealing the existence of cryptic species.