Evidences & Mechanisms of Evolution Quiz

Sickle-cell anemia is associated with a mutation in the red blood cells that changes the shape. Scientists think this is an evolutionary response to exposure to malaria. People who are heterozygous for this allele are less likely to get malaria if they are bitten by a mosquito carrying the disease. This change in variation is called a.. 

• Mutation
• Response
• Migration
• Phenotype

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The eye structures of cephalopods, such as the blue ringed octopus, and mammals evolved independently to perform very similar functions. This type of evolution is called

• Allotopic separation
• Convergent evolution
• Divergent evolution 
• Sympatic association 

Fossils of animals that  lived during the early Permian period. From 299 million years ago to 271 million years ago,  have been found in South Africa and Brazil. What is the best explanation for these fossils being found in these two countries?

• There are many fossils of these worldwide, many have not been discovered yet.
• Climate change forced the speciation of this organism in two separate countries
• The original organisms only lived in small area that then separated due to continental drift
• The organism expanded its range due to genetic drift

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Peacock males have evolved to have large and beautiful tales. Long tails are difficult to carry when trying to escape from a predator. However, females, peahens, have been shown to prefer males with longer, more resplendent tales, despite the risks from predation. This is an example of 

• Disruptive selection
• Divergent evolution
• Nonrandom Mating

• Geographical isolation

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Fitness is an organism's capacity to

• survive and mate

• reproduce and mate

• survive and reproduce

• live a long time

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The picture is showing an example of

• allopatric

  speciation

• sympatric

  speciation

• postzygotic barriers

• convergent evolution

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Genetic variation can arise from a random change in the DNA of a gene.  The change is called a(n)

• mutation
• gene flow
• gene pool
• allele

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A fire has wiped out the vegetation that produces medium sized seeds. As a result, the finches left can feed on seed that are available in two sizes: small and large. What type of selection is likely to take place in this population?

• directional selection

• disruptive selection

• stabilizing selection

• artificial selection

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What type of selection is depicted in the picture? 

• stabilizing 
• directional 
• disruptive 
• the answer is not here

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_{What type of selection is occurring in these example?}

• Directional 
• Stabilizing
• Disruptive

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