Population Genetics

Having a small gene pool can lead to extinction

• True

• False

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A gene pool is

• all of the alleles in an individual

• all of the alleles in a population

• a body of water filled with fish

• all of the bases in one strand of DNA

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The percentage of an allele in the population.

• population genetics

• gene pool

• Hardy Weinberg equilibrium

• allele frequency

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Select the best answer based on the image.

• Gene Flow

• Genetic Drift

Ten years ago, in a small population of ducks, two sizes of eyes were observed, large and small. Three ducks have large eyes and 7 have small.  2 of the large-eyed ducks are randomly hit by cars and killed. Today, no large-eyed ducks are present in the population. Which term best describes this scenario?

• gene flow
• bottleneck
• mutation
• founders

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Mutations are important because they bring about

• death of the organism in which they develop

• genetic variation needed for a population to evolve

• benefits for the individual, not for the population

• changes in genotype, but not phenotype

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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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If you look carefully, you can see an organism's genotype

• true

• false

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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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