Calculating Allele Frequency

• Frequency of the dominant allele

• Frequency of the recessive allele

• Frequency of the homozygous recessive genotype

• Frequency of the heterozygous genotype

Calculate the frequency of the dominant allele in this population of beetles. Make sure to write your answer in percent form with the percent sign and no numbers after the decimal. (example: 24%)

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NGSS.HS-LS4-4

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The allele frequencies of the mouse population in the picture are changing over time. Which is true?

• The population is evolving.

• The population is not evolving.

• The population will go extinct.

• The population's genetic variation is increasing.

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NGSS.HS-LS4-4

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Select ALL of the following that violate the Hardy-Weinberg assumptions and would lead to a change in allele frequencies in a population.

• natural selection

• large population

• no mutations

• nonrandom mating

• no migration

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NGSS.HS-LS4-4

What is allele frequency in a population?

• The number of alleles in a population

• The proportion of a specific allele among all alleles for a gene in a population

• The number of individuals with a specific allele

• The ratio of dominant to recessive alleles

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NGSS.HS-LS3-3

Which equation is used to calculate allele frequency in a population?

• Hardy-Weinberg equation

• Mendel's law of segregation

• Darwin's theory of evolution

• Lamarck's theory of inheritance

In a population of 100 individuals, 36 are homozygous recessive. What is the frequency of the recessive allele?

• 0.36

• 0.6

• 0.4

• 0.16

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NGSS.HS-LS4-4

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If the frequency of allele A is 0.7, what is the frequency of allele a in a population?

• 0.3

• 0.7

• 0.5

• 0.2

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NGSS.HS-LS3-3

What does the term 'genetic drift' refer to in the context of allele frequency?

• A change in allele frequency due to random sampling

• A change in allele frequency due to natural selection

• A change in allele frequency due to mutation

• A change in allele frequency due to migration

Which of the following can cause a change in allele frequency in a population?

• Random mating

• Large population size

• Mutation

• Stable environment

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NGSS.HS-LS4-4

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