The Hardy-Weinberg principle

The Hardy-Weinberg principle Quiz

Spec 3.7.2 · AQA A-Level Biology: Quiz

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5 questions, one answer each

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1. Which describes the gene pool of a population?
- A. The number of individuals in the population
- B. All the alleles of all the genes in the population at a given time
- C. The proportion of individuals with a given phenotype
- D. The set of species living in an area
2. In a population, 16% of individuals show a recessive phenotype. What is the frequency of the recessive allele?
- A. 0.40
- B. 0.16
- C. 0.32
- D. 0.84
3. A recessive allele has a frequency of 0.3. What is the frequency of heterozygotes?
- A. 0.09
- B. 0.21
- C. 0.42
- D. 0.49
4. Which change would mean the Hardy-Weinberg principle no longer applies?
- A. A large population size
- B. Random mating
- C. Equal survival of all genotypes
- D. Immigration of individuals carrying different alleles
5. If $p = 0.8$ for a population, what is $p^2 + 2pq + q^2$ ?
- A. 0.64
- B. 1
- C. 0.8
- D. 1.64