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MTLE Middle Level Science: Basic 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!

Page 1

Question 1 1. Why don't all people look alike?

Question 2 2. What is a trait?

Question 3 3. Which molecule(s) is responsible for your physical appearance?

Question 4 4. Which of the following terms best describes a segment of DNA that codes for a particular trait?

Question 5 5. Which process contributes to the production of a protein?

Page 2

Question 6 6. If a human has one X chromosome and one Y chromosome, that human will become:

Question 7 7. Individuals with Klinefelter syndrome have an additional:

Question 8 8. In what year was the Y chromosome discovered to be a sex-determining chromosome?

Question 9 9. The AZF gene is responsible for:

Question 10 10. Which gene on the Y chromosome is responsible for sex determination?

Page 3

Question 11 11. The locus is _____.

Question 12 12.

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

Question 14 14. Which of the following is NOT an example of a phenotype?

Question 15 15. An allele is _____.

Page 4

Question 16 16. What are the differences between somatic and germ-line mutations?

Question 17 17. DNA can be changed by which of the following?

Question 18 18. A codon is which of the following?

Question 19 19. Mutations are defined as which of the following?

Question 20 20. Natural selection is based on the which of the following ideas?

Page 5

Question 21 21. Are phenotypes caused by genes or environment?

Question 22 22. People today are taller than they were a hundred years ago. This seems to be because:

Question 23 23. What is the relationship between an individual's genotype and their phenotype?

Question 24 24. Which is an example of a phenotype?

Question 25 25. Why do we think there must be many genes for eye color?

Page 6

Question 26 26. Every normal human has two sex chromosomes. Which of the following is the correct way to write these two chromosomes in a normal male?

Question 27 27. Which of the following is an X-linked disorder?

Question 28 28. What does X-linked mean?

Question 29 29. Which is true of most X-linked genetic disorders?

Question 30 30. Which is true of the X chromosome?

MTLE Middle Level Science: Basic 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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