Transmission/Mendelian 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. Which of the following is a common P value used for the Chi-Square test?

Question 2 2. Which of the following crosses most likely produced the following results, where B=blue, b=green, H=two-horned and h=one-horned: 54 blue, two-horned lizards, 18 blue, one-horned lizards, 18 green, two-horned lizards, and 6 green, one-horned lizards?

Question 3 3. How can one test if two genes are a case of epistasis?

Question 4 4. What is the effect of imprinting on a copy of a gene?

Question 5 5. Which of the following statements about heritability is FALSE?

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Question 6 6. 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 7 7. Gregor Mendel proposed which of the following concepts?

Question 8 8. Phenotypic variation is a combination of:

Question 9 9. In the chi-square test equation, you must find the difference between which of the following?

Question 10 10. For the agouti gene, which of the following statements are TRUE?

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Question 11 11. In phenotypic plasticity, a phenotype changes in response to:

Question 12 12. 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 13 13. You perform a dihybrid cross with two mice that are heterozygous for two genes and notice that the offspring are three different colors. The F1 generation mice were pure-breeding brown and black, but the F2 offspring are black, brown, and white. How can this result be explained?

Question 14 14. A heritability of 0 means which of the following?

Question 15 15.

Which of the following statements is true?

I. The one thousandth base pair on chromosome one of an organism is an example of a locus.

II. Changing the DNA in a gene by one base pair could create a new allele.

III. Cells in a diploid organism possess two copies of each homolog (except gametes).

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Question 16 16. Which of the following is NOT an example of a phenotype?

Question 17 17. You find a chi-square value, you then compare it to a specific number in the chi-square table at a P value (level of significance) and degrees of freedom that you have chosen. If the chi-square value is less than the chi-square table, your conclusion is to

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. What is a quantitative trait?

Question 20 20. How do DZ twins form?

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Question 21 21. Which phenotype(s) do the red blood cells from a person with AB blood type exhibit?

Question 22 22. How are gene-environment interactions and polygenic traits related?

Question 23 23. Why can't heritability be calculated from MZ twins alone?

Question 24 24. Which of the following statements about epistasis is FALSE?

Question 25 25. If two pure-breeding tailless hamsters were crossed, and all the progeny were tailless, then which of the following is TRUE?

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Question 26 26. Which of the following is NOT an example of polygenic inheritance?

Question 27 27. If MZ and DZ twins have the same likelihood of sharing a trait within the twin pair that genetics does not change, then what is the heritability of this trait?

Question 28 28. 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 29 29.

Hemophilia is an X-linked recessive trait. Consider a cross between a woman who is a carrier and a man who suffers from hemophilia. Which of the following statements is/are true?

I. All sons of these parents will be a hemophiliac.

II. A son who suffers from hemophilia received the hemophilia allele from his mother.

III. Half of the daughters of this cross are predicted to be hemophiliacs.

Question 30 30. Tay-Sachs disease is caused by:

Transmission/Mendelian 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!

Biology 102: Basic Genetics  /  Science Courses
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