Speciation Review

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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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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A population is best described as....

• When a new species is made from an existing species

• A group of individuals in the same species

• Mating

• Ability of an organism to have children

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Match the following

• Ursa americanus

• 
• Pantera leo

• 
• Pinus contorta

• 
• Drosera capensis

• 
• Canis lupis

• 

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Match the following

• Uniform Dispersion

• 
• Random Dispersion

• 
• Clumped Dispersion

• 

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A type of speciation caused by geographic barriers separating populations that once shared a gene pool

• Sympatric

• Allopatric

• Chemical

• Temporal

Which are causes of speciation? Choose all that apply

• Isolation caused by mountains, rivers and man-made structures

• preference for different foods

• change in environment

• different mating behaviors

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A flash flood carried a raft of Amazon ants away from their original population. There is enough distance between the two groups, that they will never meet in nature again. What type of reproductive barrier is this?

• behavioral isolation

• temporal isolation 

• gametic isolation

• geographic isolation 

Match the following

• a trait that promotes success in the natural environment

• artificial selection

• a driving force of changes in a population over time

• mutation

• humans produce desired outcomes by selective breeding

• biological evolution

• random change in the DNA sequence giving rise to genetic variation

• adaptation

• changes in a species or population over generations

• natural selection

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Some female peacocks prefer males with large, colorful tales while other female peacocks prefer males with no tail at all. Females are beginning to only mate with the type of males with the tail they prefer. What type of reproductive barrier is this?

• behavioral isolation

• hybrid sterility 

• temporal isolation

• mechanical isolation 

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