AP Biology: Genetics and Heredity 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. The locus is _____.

Question 2 2. Which of the following statements does NOT help explain Mendel's law of segregation?

Question 3 3. Joe is in urgent need of a blood transfusion. His blood genotype is AA. Mike has an oo genotype, and Mary has a BB genotype. Who would be able to donate blood to Joe, and why?

Question 4 4. Which of the following explains why bacteria DO NOT follow Mendel's First Law?

Question 5 5. A Punnett square is useful when determining phenotypic output, for all of the following reasons EXCEPT:

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Question 6 6. A _____ is a cross between two individuals that are heterozygous at two loci.

Question 7 7. 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?

Question 8 8. Two animals heterozygous at gene A are mated. What ratio of genotypes will be produced in the offspring?

Question 9 9. Which of the following is NOT an example of a phenotype?

Question 10 10. 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 11 11. 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?

Question 12 12. When an organism is diploid, that means it has _____.

Question 13 13. An allele is _____.

Question 14 14. Which phenotypic ratio is indicative of a dihybrid cross?

Question 15 15. The trait which is expressed in a heterozygous state is known as

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Question 16 16. Mendel's study of what plant eventually revolutionized the understanding of heredity?

Question 17 17. How would you define a dihybrid cross?

Question 18 18. Autosomes are:

Question 19 19. 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 20 20. In 1900, what observation helped other scientists realize the significance of Mendel's work?

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Question 21 21. A _____ is a trait which is determined by two or more genes, but not any environmental factors.

Question 22 22.

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 23 23.

Which of the following statement(s) accurately describes an advantage provided by model organisms?

I. The laboratory environment can be controlled.

II. True-breeding strains can be generated.

III. Specific combinations of alleles can be engineered.

Question 24 24. Gregor Mendel proposed which of the following concepts?

Question 25 25. Which of the following is NOT an example of a homozygous genotype?

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Question 26 26. 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 27 27. The law of independent assortment states that:

Question 28 28.

You have the following alleles: B=blue, b=green, H=two-horned and h=one-horned:

Which of the following crosses most likely produced the following results?

54 blue, two-horned lizards

18 blue, one-horned lizards

18 green, two-horned lizards

6 green, one-horned lizards

Question 29 29. What type of organism has two copies of every gene?

Question 30 30. When two genes are located on the same chromosome, they are said to be _____.

AP Biology: Genetics and Heredity 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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