In the model of allopatric speciation, the geographical...

Name: Problem 6, Chapter 22: Biology: The Dynamic Science
Uploaded: 2021-07-18T00:25:35-08:00
Duration: 1 min 45 s
Channel: Joanna Quigley
Description: In the model of allopatric speciation, the geographical separation of two populations: a. is sufficient for speciation to occur. b. occurs only after speciation is complete. c. allows gene flow between them. d. reduces the relative fitness of hybrid offspring. e. inhibits gene flow between them.

In the model of allopatric speciation, the geographical separation of two populations: a. is sufficient for speciation to occur. b. occurs only after speciation is complete. c. allows gene flow between them. d. reduces the relative fitness of hybrid offspring. e. inhibits gene flow between them.

In the model of allopatric speciation, the geographical separation of two populations:
a. is sufficient for speciation to occur.
b. occurs only after speciation is complete.
c. allows gene flow between them.
d. reduces the relative fitness of hybrid offspring.
e. inhibits gene flow between them.

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Key Concepts

Allopatric Speciation

Allopatric speciation is the process by which new species arise when populations of a single species become geographically isolated from each other. This isolation prevents gene flow between the groups, allowing them to evolve independently and accumulate differences that can lead to the formation of distinct species over time.

Geographical Isolation

Geographical isolation refers to the physical separation of populations by geographic barriers such as mountains, rivers, or distance, which prevents interbreeding. This separation is crucial in allopatric speciation as it stops the exchange of genetic material, leading to divergence through mutation, genetic drift, and selection.

Gene Flow

Gene flow is the transfer of genetic variation from one population to another. In the context of allopatric speciation, the absence of gene flow due to geographical isolation allows populations to evolve independently, which can enhance divergence and eventually lead to reproductive isolation.

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