Population genetics

Darwin's Finches became separate species due to

• Geographic isolation

• Temporal Isolation

• Behavioral Isolation

• Postzygotic Isolation

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The term for the formation of new and distinct species over the course of evolution is...

• speciation

• biological species concept

• reproductive barrier

• natural selection

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What is a species? 

• A group of organisms that can mate with each other and produce fertile offspring. 
• A group of organisms that can mate and produce offspring even if those offspring are infertile.
• A group of organisms that genetically are very different from each other. 
• Indivual organisms that live in the same environment. 

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A new river forms and splits two populations, causing ______________ speciation

• Sympatric

• Allopatric

• Extreme

• Convergent

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Orcas occur in the same habitat but some are avoiding each other and do not interbreed. They have different diets, vocal behavior, and social structures. What type of speciation is this?

• Allopatric

• Sympatric

• Complex

• Covergent

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04) The biological species concept (BSC) defines a species as:

• a. all similar individuals.

• b. including all interbreeding populations within a group.

• c. members of natural populations that interbreed

• d. including all members of actual or potentially interbreeding populations that are reproductively isolated from other groups

Two organisms that are closely related would have

• similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

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A reproductive barrier that prevents mating from ever taking place is a:

• Postzygotic Barrier

• Prezygotic Barrier

• Natural Selection

• Species-specific Barrier

A reproductive barrier that prevents mating from occurring due to time is a:

• Behavioral Isolation

• Temporal Isolation

• Habitat Isolation

• Mechanical Isolation

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Dogs are unable to mate with cats because their sperm/egg cells are not compatible. This is called:

• Temporal Isolation

• Gametic Isolation

• Behavioral Isolation

• Habitat Isolation