classification and evolution

What is another name for natural selection?

• survival of the smartest

• survival of the fastest

• survival of the biggest

• survival of the fittest

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Darwin wrote that organisms with traits that are best suited to the environment will ________________

• increase in number

• become extinct

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Which of the following is NOT an example of natural selection?

• People selectively breeding hamsters.

• Insect populations developing resistance to certain pesticides.

• Bacteria becoming resistant to antibiotics.

• Male birds of certain species developing colorful feathers to attract female mates.

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What characteristic did Darwin observe about the finches on the Galapagos Islands?

• Their feathers

• Genotypes

• Their beaks

• Their body sizes

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Which of the following is an example of the founder effect?

• Humans choose two dogs they like the characteristics of and breed them together.

• Affected individuals with blue skin can trace their ancestry back to one of the first settlers in the region.

• The environment of a fox population changes and over time foxes who are white survive and pass on their genes to their offspring.

• Cheetah populations reach their lowest levels with reduced diversity and as they rebound are so genetically similar they appear to be inbred.

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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

This mechanism of evolution occurs when populations migrate.

• Extinction

• Gene flow

• Genetic drift

• Natural Selection

Which of the following is an example of the bottleneck effect?

• Cheetah populations reach their lowest levels with reduced diversity and as they rebound are so genetically similar they appear to be inbred.

• Affected individuals with blue skin can trace their ancestry back to one of the first settlers in the region.

• The environment of a fox population changes and over time foxes who are white survive and pass on their genes to their offspring.

• Humans choose two dogs they like the characteristics of and breed them together.

Genetic drift is more likely to happen in...

• aquatic populations

• small populations

• terrestrial populations

• older populations

What is this an example of?

• diversity of species

• variation

• vestigial structures

• DNA studies

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