Natural selection, Hardy Weinberg Practice Quiz

In the Hardy-Weinberg Equation, q² is the frequency of what?

• The recessive allele 
• the dominant allele
• the recessive genotype
• the dominant genotype

If 98 out of 200 individuals in a population express the frequency of recessive genotype, what percent of the population would you predict would be heterozygous?

• 70%

• 30%

• 42%

• 49%

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Which Hardy-Weinberg equation represents the genotype frequencies in a population?

• p + q = 1
• p2 + 2pq + q2 = 1
• p2 + pq2 + q2 = 1
• p + 2pq + q3 = 1

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Which Hardy-Weinberg factor represents the frequency of heterozygous individuals in a population?

• p2
• 2pq
• q2
• p2 + 2pq

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A population of frogs has 37 individuals who are brown in color and 194 individuals who express the dominant green color. What is the dominant allele frequency for this population?

• 0.2
• 0.4
• 0.6
• 0.8

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Gene flow involves

• Natural disasters killing most of the members of a population
• Individuals moving into and out of the population
• Selective mating
• Small changes because of the environment

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Genetic drift is likely to be seen in a population

• That has a low mutation rate
• In which natural selection is occurring
• That is very small
• For which environmental conditions are changing

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What does the image represent?

• Gene flow
• Genetic drift
• Mutation
• Adaptation

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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

Which of the following is an example of the bottle neck effect?

• Bald Eagles are hunted until near extinction, population recovers.
• Small group of iguanas floats to an island, starts a new population.
• Red fox pups are more likely to survive in a snowy environment if they are born white.
• Farmer chooses seeds from largest apples to plant next year.  This results in larger apples from year to year.

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