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The Hardy Weinberg Equilibrium Model Chapter Exam

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Question 1 1.

Consider a population where the number of dorsal spines on a fish is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long spine and recessive a allele encodes a short spine. The fish is diploid and reproduces sexually. If the number of AA individuals is 500, the number of Aa individuals is 100, and the number of aa individuals is 400, which of the following statements are true:

I. The population is in equilibrium.

II. The population is not in equilibrium.

III. The observed number of fish with short spines exceeds the expected.

IV. The expected number of AA individuals exceeds the number of observed.

Question 2 2. Consider the following scenario. The coat color gene of a population of squirrels is defined by dominant allele G which encodes a gray coat and recessive allele g which encodes a black coat. In a population, genetic typing reveals the genotypic distribution to be 50 GG, 30 Gg, and 20 gg. If this population is in equilibrium, what should the genotypic frequency of the GG squirrels in this population be?

Question 3 3. Consider a population where the number of dorsal spines on a fish is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long spine and recessive a allele encodes a short spine. The fish is diploid and reproduces sexually. The number of AA individuals in this population is 500, the number of Aa individuals is 100, and the number of aa individuals is 400. If a new population was started with 10 AA, 20 Aa, and 10 aa fish, what are the new allelic frequencies?

Question 4 4. Consider the following scenario. The coat color gene of a population of squirrels is defined by dominant allele G, which encodes a gray coat, and recessive allele g, which encodes a black coat. In a population, genetic typing reveals the genotypic distribution to be 50 GG, 30 Gg, and 20 gg. What is the allelic frequency of the G allele?

Question 5 5. Consider the following scenario. The coat color gene of a population of squirrels is defined by dominant allele G, which encodes a gray coat, and recessive allele g, which encodes a black coat. In a population, genetic typing reveals the genotypic distribution to be 50 GG, 30 Gg, and 20 gg. If this population is in equilibrium, what should the genotypic frequency of the Gg squirrels in this population be?

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Question 6 6.

Which of the following statements about Hardy-Weinberg equilibrium are true?

I. Hardy-Weinberg equilibrium is rarely found in the wild.

II. The allele frequency of a population in Hardy-Weinberg equilibrium does not change.

III. The Hardy-Weinberg equation predicts the evolutionary agent affecting a population.

Question 7 7. Consider the following scenario. The coat color gene of a population of squirrels is defined by dominant allele G, which encodes a gray coat, and recessive allele g, which encodes a black coat. In a population, genetic typing reveals the genotypic distribution to be 50 GG, 30 Gg, and 20 gg. What is the allelic frequency of the g allele in this population?

Question 8 8.

Which of the following criteria must be met for Hardy-Weinberg equilibrium?

I. Beneficial trait

II. Non-random mating

III. Large population size

Question 9 9. Which of following populations COULD be balanced in Hardy-Weinberg equilibrium?

Question 10 10. Consider the following scenario. The coat color gene of a population of squirrels is defined by dominant allele G which, encodes a gray coat, and recessive allele g, which encodes a black coat. In a population, genetic typing reveals the genotypic distribution to be 50 GG, 30 Gg, and 20 gg. If this population is in equilibrium, what should the genotypic frequency of the gg squirrels in this population be?

Page 3

Question 11 11. Consider a population where the number of dorsal spines on a fish is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long spine and the recessive a allele encodes a short spine. The fish is diploid and reproduces sexually. If the number of AA individuals is 500, the number of Aa individuals is 200, and the number of aa individuals is 300, what is the chance that I catch a fish with long spines in this population?

Question 12 12.

Consider a population where the number of dorsal spines on a fish is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long spine and recessive a allele encodes a short spine. The fish is diploid and reproduces sexually. If the number of AA individuals in the population is 500, the number of Aa individuals is 100, and the number of aa individuals is 400. If a new population was started with 10 AA, 20 Aa, and 10 aa fish, which of the following statements are true about the new population?

I. The population is in equilibrium.

II. The population is not in equilibrium.

III. The observed number of fish with short spines exceeds the expected.

IV. The expected number of AA individuals exceeds the number of observed.

Question 13 13. The Hardy-Weinberg equation is used to study

Question 14 14.

After observing a population of fish with interesting protective spines, a scientist decides to move two of the fish into a new pond to create a new population of fish to study the ability of the fish to survive a new set of predators. Which of the following evolutionary agents did the scientist introduce?

I. Natural selection

II. Founder effect

III. Mutation

The Hardy Weinberg Equilibrium Model Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. You will lose your work if you close or refresh this page. Good luck!

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