Unit 1 and 2 Review Practice

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 

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When reproductive barriers separate a population of a species in nature, the species no longer share a... 

• taxa
• gene pool 
• phylogenetic tree
• species 

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When has speciation occurred?

• When populations no longer look the same
• When populations no longer have the same frequency of alleles
• When populations are living in different environments
• When populations can no longer interbreed

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The hypothesis that evolution of a species occurs gradually over time as a slow and constant process is known as

• speciation
• punctuated equilibrium
• gradualism
• microevolution

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Type of reproductive barrier evidenced by this diagram.

• Temporal isolation

• Geographic isolation

• Behavioral isolation

• Mechanical isolation

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Which combination of characteristics in a population would provide the greatest potential for evolutionary change?

• Small population, low mutations rates

• Large population, low mutation rates

• Small population, high mutation rates

• Large population, high mutation rates

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Genetic drift is change in the allele frequency of a population due to...

• random chance

• natural selection

• non-random mating (sexual selection)

• artificial selection

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What is this an example of?

• diversity of species
• variation
• vestigial structures
• DNA studies

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A rabbit that can easily outcompete other rabbits for food and that can produce many offspring has a high

• sexuality
• mutation rate
• fitness
• adaptability

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A few deer wander out of their native woods into a completely new park where no deer had ever been before. They go on to create an entirely new population.

• Genetic Drift
• Natural Selection
• Non-random mating
• Mutation

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