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Dispersal vs. Vicariance: Allopatric Speciation Explained

Chapter 11, Problem 11

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QUESTION:

What is the main difference between dispersal and vicariance?

a. One leads to allopatric speciation, whereas the other leads to sympatric speciation.

b. One involves the movement of the organism, whereas the other involves a change in the environment.

c. One depends on a genetic mutation occurring, whereas the other does not.

d. One involves closely related organisms, whereas the other involves only individuals of the same species.

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Dispersal vs. Vicariance: Allopatric Speciation Explained
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Learn the distinctions between dispersal and vicariance in biology. Understand how organisms' movements and environmental changes play crucial roles in allopatric speciation. Grasp the differences between movement across existing barriers and the creation of new barriers.

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Questions & Answers

QUESTION:

What is the main difference between dispersal and vicariance?

a. One leads to allopatric speciation, whereas the other leads to sympatric speciation.

b. One involves the movement of the organism, whereas the other involves a change in the environment.

c. One depends on a genetic mutation occurring, whereas the other does not.

d. One involves closely related organisms, whereas the other involves only individuals of the same species.

ANSWER:

Step 1 of 2

Dispersal and vicariance are two types of allopatric processes that cause the separation of a population into different geographical areas. Dispersal is the migration of a part of the population across a preexisting geographic barrier, such as a mountain range or a river.

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