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Questions and Answers
Which term refers to all the alleles for all loci in a population?
In a population of diploid organisms, what is the total number of alleles at a locus?
How can the frequency of an allele in a population be calculated?
What is the sum of the frequencies of all alleles in a population?
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In a population of wildflowers, there are 320 red flowers, 160 pink flowers, and 20 white flowers. What is the frequency of the allele for red flowers?
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In the same population of wildflowers, what is the frequency of the allele for white flowers?
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In the population of wildflowers, what is the frequency of the allele for pink flowers?
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What is the frequency of the allele for red flowers in the population of wildflowers?
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What is the frequency of the allele for white flowers in the population of wildflowers?
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What is the sum of the frequencies of the alleles for red, pink, and white flowers in the population of wildflowers?
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Which of the following statements is true about genetic variation and evolution?
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What is a population?
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What is the Hardy-Weinberg equation used for?
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Which of the following is true about populations and breeding?
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What is required for a population to evolve?
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Which of the following is not guaranteed by genetic variation?
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What does the Hardy-Weinberg equation compare?
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What does interbreeding mean?
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Which of the following is true about the Hardy-Weinberg equation?
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What is the relationship between genetic variation and evolution?
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Study Notes
Genetic Variation and Evolution
- The term that refers to all the alleles for all loci in a population is the genotype.
Alleles and Frequencies
- In a population of diploid organisms, the total number of alleles at a locus is 2 (one from each parent).
- The frequency of an allele in a population can be calculated by dividing the number of alleles by the total number of alleles.
- The sum of the frequencies of all alleles in a population is 1.
Wildflower Example
- In a population of wildflowers, the frequency of the allele for red flowers is 0.64 (320/500).
- The frequency of the allele for white flowers is 0.04 (20/500).
- The frequency of the allele for pink flowers is 0.32 (160/500).
Hardy-Weinberg Equation
- The Hardy-Weinberg equation is used to calculate the frequencies of alleles and genotypes in a population.
- The equation compares the expected frequencies of alleles and genotypes with the actual frequencies in a population.
Population and Evolution
- A population is a group of interbreeding individuals that share a common gene pool.
- For a population to evolve, there must be genetic variation, selection, mutation, and genetic drift.
- Genetic variation is required for evolution, but it does not guarantee evolution.
- Interbreeding refers to the mating of individuals within a population.
Key Concepts
- The Hardy-Weinberg equation assumes that a population is not evolving, but in reality, populations do evolve.
- Genetic variation is the raw material for evolution, and evolution is the change in the frequency of alleles over time.
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Description
Test your understanding of the Hardy-Weinberg equation and its application in determining if a population is evolving. Learn about the role of genetic variation and the factors that contribute to evolution.
