Prentice Hall Biology Chapter 11: Introduction to Genetics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "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. Good luck!

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Question 1 1. After meiosis I, each daughter cell contains:

Question 2 2.

Replication precedes which of the following types of cell division?

I. Mitosis

II. Meiosis I

III. Meiosis II

Question 3 3. Which type of dominance describes a situation in which heterozygotes demonstrate a phenotype which is intermediate between the homozygotes?

Question 4 4.

Which of the following statements is true?

I. A dihybrid cross is a cross between individuals heterozygous at one gene.

II. The law of independent assortment describes the relationship between alleles of a single gene.

III. The law of segregation describes the manner in which genes on different chromosomes segregate.

IV. Homologous chromosomes segregate into different gametes.

Question 5 5. Sarah has blonde hair even though both of her parents have brown hair. In old photos she has seen that both her parents' mothers had blonde hair before it went white. Given this information what can you suggest about the dominance of the different hair color genes?

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Question 6 6.

Chromatids can be found in which of the following types of cell division?

I. Mitosis

II. Meiosis I

III. Meiosis II

Question 7 7. Which of the following is NOT an example of a homozygous genotype?

Question 8 8. The following results were observed from a mating between two black and white speckled cats: 5 black cats, 12 black and white speckled cats, and 4 white cats. Which term describes the relationship between the alleles of the coat color gene?

Question 9 9. Which of the following statements does NOT help explain Mendel's law of segregation?

Question 10 10. A scientist is studying an animal which can be found with either black or white fur. Which of following could be FALSE in this study?

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Question 11 11. Incomplete dominance governs the pigment gene of a flower. A mating between heterozygotes yields the following phenotypic ratio: 15 red flowers, 32 pink flowers and 14 white flowers. Which statement describes the situation?

Question 12 12. If the cell of a diploid organism (2n=4) undergoes mitosis, how many chromosomes are present in each daughter cell?

Question 13 13. Which of the following statements is NOT true of meiosis?

Question 14 14. If the cell of a diploid organism (2n = 6) undergoes meiosis, how many different chromosome homologs are present in each daughter cell at the end of meiosis I?

Question 15 15. Consider the following experiment: A scientist determines that the number of dorsal spines of her experimental fish is determined by a single locus. She mates a fish with 1 dorsal spine with a fish of the same species with 2 dorsal spines. The mating produces ten fish, which all have 1 dorsal spine. Which of the following statements does not fit with this result?

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Question 16 16.

Which of the following events occur during prophase II?

I. Kinetochores assemble on each tetrad

II. Chromosome condensation

III. Spindle apparatus assembly

Question 17 17. Which of the following meiosis II events are correctly ordered?

Question 18 18. Alleles A, B, C and D are linked on one chromosome, and alleles a, b, c and d are linked on the homolog. During meiosis, a crossover event occurs between genes A and B. Which of the following is an example of a chromatid that could be found in one of the resulting gametes?

Question 19 19. Alleles A and B are linked on chromosome 1 (such that you have A-B and a-b). Alleles C and D are linked on chromosome 2 (you have C-D and c-d). If a crossover event does not occur between either set of genes, which gamete genotype could NOT be produced by an individual heterozygous at each locus?

Question 20 20. Crossing over occurs during which phase of meiosis?

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Question 21 21. A scientist is studying an organism with a mutation which reduces the efficiency of tetrad formation. This defect would most likely affect the ability to:

Question 22 22.

The following are consequences of meiotic recombination:

I. Increased genetic diversity

II. Exchange of parts of homologous chromosomes

III. Stabilization of chromosomes at the metaphase plate

Question 23 23.

You could draw which of the following conclusions from a dihybrid cross which produces a 9:3:3:1 ratio of phenotypes?

I. The alleles of one gene sort independently of another gene.

II. The alleles of the two genes in question exhibit a simple dominant/recessive relationship.

III. The animals which were crossed were both homozygous with respect to at least one locus in question.

Question 24 24.

Genes A and B are located on the same chromosome arm in the following orientation: centromere, gene A, gene B, telomere. Which of the following recombinant chromatids could be produced by a crossover event between B genes in a heterozygote in which the dominant alleles are linked on one homolog and the recessive ones are linked on the other homolog?

I. A B

II. a B

III. A b

IV. a b

Question 25 25. Two animals heterozygous at gene A are mated. What ratio of genotypes will be produced in the offspring?

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Question 26 26.

Sister chromatids segregate to opposite poles during which of the following types of cell division?

I. Mitosis

II. Meiosis I

III. Meiosis II

Question 27 27. If the cell of a diploid organism (2n = 6) undergoes meiosis, how many chromosomes are present in each daughter cell at the end of meiosis II?

Question 28 28. Which of the following structures is unique to meiosis?

Question 29 29. Which phenotype(s) do the red blood cells from a person with AB blood type exhibit?

Question 30 30. Gregor Mendel proposed which of the following concepts?

Prentice Hall Biology Chapter 11: Introduction to Genetics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "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. Good luck!

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