Hardy Weinberg EOC Review

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

• p2
• 2pq
• q2
• p2 + 2pq

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When a population is at Hardy-Weinberg equilibrium, the allele frequencies should remain constant. Which of the following populations is most likely experiencing Hardy-Weinberg equilibrium?

• In a large moth population, both red and orange moths are consistently abundant
• In a spider population, the males with the most intricate courtship dance get selected as mates more quickly than other male spiders.
• In a mosquito population, being heterozygous for a given trait makes the individuals resistant to four viral infections

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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NGSS.MS-LS2-2

If a population has the following genotype frequencies: AA = 0.42, Aa = 0.46, and aa = 0.12, what are the allele frequencies?

• A = 0.42, a = 0.12
• A = 0.6, a = 0.4
• A = 0.65, a = 0.35
• A = 0.84, a = 0.24

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NGSS.HS-LS2-2

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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NGSS.MS-LS4-4

Which of the following statements is supported by the graph below?

• The population is in Hardy-Weinberg equilibrium, as the sum of the frequency of the dominant allele and the recessive allele is always equal to 1
• The percentage of individuals homozygous recessive for this particular trait is increasing over time
• Selection has caused frequencies to change over time because individuals with a dominant allele survive at higher rates than individuals with recessive alleles
• Individuals who are homozygous recessive for this particular trait have migrated into the population, causing the frequency to approach 1

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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
• Hardey-Weinberg equilibrium within a population

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A chance occurrence that negatively affects a population because the population is small.

• genetic drift
• mutation
• speciation
• migration

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Which of the following is NOT a condition for Hardy-Weinberg Equilibrium?

• No mutations
• Random Mating
• No natural selection
• No offspring

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When a population is in Hardy-Weinberg equilibrium,  what is NOT happening to the species?

• Survival
• Reproduction
• Death
• Evolution

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NGSS.HS-LS4-2

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