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Understanding Speciation Process

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Questions and Answers

What is the main factor that leads to speciation?

Similar selection pressures on different populations

Gene flow between populations

Geographical isolation and separation of populations (correct)

Mutations in the DNA

How do different selection pressures contribute to speciation?

They lead to identical traits in all individuals

They prevent any genetic variation

They favor different phenotypes in each population (correct)

They promote gene flow between populations

Why is gene flow important in preventing speciation?

It enhances genetic variation between populations

It ensures that populations remain geographically isolated

It allows for breeding between different populations (correct)

It leads to identical phenotypes in all individuals

How can the formation of new species be confirmed?

By analyzing DNA, amino acid sequences, or structural features Signup and view all the answers

What happens if individuals cannot produce viable and fertile offspring?

They are considered different species Signup and view all the answers

What is the ultimate result of speciation?

No gene flow between populations Signup and view all the answers

How do geographical barriers like mountain ranges or rivers contribute to speciation?

They prevent gene flow between separated populations Signup and view all the answers

What is the significance of genetic divergence in the process of speciation?

It leads to populations becoming unable to interbreed Signup and view all the answers

How can DNA, amino acid sequences, or structural features be used to confirm speciation?

By revealing significant differences between populations Signup and view all the answers

What defines two populations as separate species?

Inability to produce viable and fertile offspring Signup and view all the answers