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Genetics & Evolution Overview 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!

Page 1

Question 1 1. Natural selection is based on the which of the following ideas?

Question 2 2. DNA can be changed by which of the following?

Question 3 3. What are the differences between somatic and germ-line mutations?

Question 4 4. Mutations are defined as which of the following?

Question 5 5. A codon is which of the following?

Page 2

Question 6 6.

Which of the following is an example of analogous structures or traits?

I. Leg bones of a human and leg bones of a penguin

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

Question 7 7. Which of the following is an example of convergent evolution?

Question 8 8. A scientist notices several birds in the same area that are similar in appearance with the exception of different beak lengths. She observes that one type of bird with a particularly long beak can pick bugs out of holes in the ground, while the birds with shorter beaks cannot. The longer beak is an example of

Question 9 9.

Which of the following is an example of a homologous structure or trait?

I. Arm bones of a human and wings of a bird

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

Question 10 10. A new mutation allows a cheetah to run faster and hunt down more prey than its slower counterparts. This mutation increased the _____ of the cheetah.

Page 3

Question 11 11. There are many different breeds of cat, even though they are all members of the same species. What accounts for these differences?

Question 12 12. What does biodiversity refer to?

Question 13 13. Which of the following best describes how evolution works?

Question 14 14. Which of the following metrics of classification is currently the most accurate?

Question 15 15. Which level of classification differentiates between different cell types?

Page 4

Question 16 16. _____ is a neurodegenerative condition affecting children, causing paralysis and death by the age of 4 and 5.

Question 17 17. Mr Johnson, aged 45 years, went to see his doctor with complaints of involuntary jerking. He also observed that he was no longer able to learn new things and had depressive tendencies. His doctor diagnosed a genetic disorder. Name the disease which is mostly likely to be associated with the symptoms presented by Mr Johnson.

Question 18 18.

A genetic disorder X can be inherited, predisposed to, or developed with initially healthy genes due to things like sunlight exposure, smoking, or viruses.

Identify X.

Question 19 19. How are genes affected in Down Syndrome?

Question 20 20. Why is anemia a symptom of sickle-cell disease?

Page 5

Question 21 21.

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).

Question 22 22. An allele is _____.

Question 23 23. Which of the following is NOT an example of a phenotype?

Question 24 24. The locus is _____.

Question 25 25. When an organism is diploid, that means it has _____.

Genetics & Evolution Overview 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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