Human Genome Test Notes Essay Example
Name: ________________________ Class: ___________________ Date: __________
ID: A
Chapter 14 - The Human Genome - Practice Test
Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following are shown in a karyotype? a. homologous chromosomes c. autosomes b. sex chromosomes d. all of the above 2. What is the approximate probability that a human offspring will be female? a. 10 percent c. 50 percent b. 25 percent d. 75 percent 3. What is the probability that a human sperm cell will carry an X chromosome? a. 0 percent c. 50 percent b. 25 percent d. 100 percent 4. A pedigree CANNOT be used to a. determine whether a trait is inherited. b. show how a trait is passed from one generation to the next. c. determine whether an allele is dominant or recessive. d. none of the above 5. A person who has PKU a. inherited the allele for the trait from one parent. b. inherited the allele for the trait from both parents. c. is heterozygous for the trait. d. will not pass the allele for the trait to his or her offspring. 6. Which of the following genotypes result in the same phenotype? a. IAIA and IAIB c. IBIB and IAIB b. IBIB and IBi d. IBi and ii 7. A change in a single gene causes the protein called CFTR to a. become less soluble. b. fold improperly. c. destroy the cell membrane. d. transport sodium ions instead of chloride ions. 8. Chromosomes 21 and 22 contain long stretches of repetitive DNA, which a. contain genes for colorblindness. b. are able to code for proteins. c. are unstable sites where rearrangements can occur. d. contain genes for Lou Gehrig’s disease. 9. Colorblindness is more common in males than in females because a. fathers pass the allele for colorblindness to their sons only. b. the allele for colorblindness is located on the Y chromosome. c. the allele for colorblindness is recessive and located on the X chromosome. d. males who are colorblind have two copies of the allele for
ID: A
Chapter 14 - The Human Genome - Practice Test
Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following are shown in a karyotype? a. homologous chromosomes c. autosomes b. sex chromosomes d. all of the above 2. What is the approximate probability that a human offspring will be female? a. 10 percent c. 50 percent b. 25 percent d. 75 percent 3. What is the probability that a human sperm cell will carry an X chromosome? a. 0 percent c. 50 percent b. 25 percent d. 100 percent 4. A pedigree CANNOT be used to a. determine whether a trait is inherited. b. show how a trait is passed from one generation to the next. c. determine whether an allele is dominant or recessive. d. none of the above 5. A person who has PKU a. inherited the allele for the trait from one parent. b. inherited the allele for the trait from both parents. c. is heterozygous for the trait. d. will not pass the allele for the trait to his or her offspring. 6. Which of the following genotypes result in the same phenotype? a. IAIA and IAIB c. IBIB and IAIB b. IBIB and IBi d. IBi and ii 7. A change in a single gene causes the protein called CFTR to a. become less soluble. b. fold improperly. c. destroy the cell membrane. d. transport sodium ions instead of chloride ions. 8. Chromosomes 21 and 22 contain long stretches of repetitive DNA, which a. contain genes for colorblindness. b. are able to code for proteins. c. are unstable sites where rearrangements can occur. d. contain genes for Lou Gehrig’s disease. 9. Colorblindness is more common in males than in females because a. fathers pass the allele for colorblindness to their sons only. b. the allele for colorblindness is located on the Y chromosome. c. the allele for colorblindness is recessive and located on the X chromosome. d. males who are colorblind have two copies of the allele for