AP Bio Population Genetics

Someone steps on some bugs and randomly removes their alleles from the population. This is an example of

• gene flow

• genetic drift

• speciation

• allele frequency

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Which of the following statements best describes what will most likely occur to the moth populations in the image above?

• The light moths will be captured by predators more easily than the dark moths, and the population of dark moths will rise.

• The light moths will be captured by predators more easily than the dark moths, and the population of light moths will rise.

• The dark moths will be captured by predators more easily than the light moths, and the dark moths will probably go extinct.

• The light moths will change their wing color to match that of the dark moths.

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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. Which term describes this scenario?

• Founder Effect

• Natural Selection

• Non-random mating

• Bottleneck

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The Hardy-Weinberg Model is...

• available at local hobby stores and retailers throughout the Greater Tazewell area.

• a mathematical tool that biologists can use to predict allele frequencies and determine whether or not evolution is occurring within a population.

• always occurring within individual organisms in nature.

• only useful in the lab and cannot be practically applied to real-world populations of organisms.  

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The percentage of an allele in the population.

• population genetics

• gene pool

• Hardy Weinberg equilibrium

• allele frequency

Which is not true about cheetah populations?

• They have experienced bottlenecks in their evolutionary history.

• They have high levels of genetic variation.

• They are prone to extinction.

• They are not likely to survive environmental changes due to their similarities.

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Alleles that improve survival will decrease in frequency in the next generation.

• True

• False

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Which of the following best describes genetic drift?

• A) A change in allele frequencies due to random events

• B) A process where advantageous traits become more common

• C) The movement of alleles between populations

• D) The formation of new species

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In a population of flowers, the allele for red color (R) is dominant over white (r). If 16% of the flowers are white, what is the frequency of the dominant allele (R)?

• A) 0.36

• B) 0.48

• C) 0.60

• D) 0.84

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

• A) A small group of birds colonizes a new island

• B) A natural disaster drastically reduces the population size

• C) A new predator is introduced to the environment

• D) A disease spreads through a population

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