Review Quizzes Chapters 11-16
1. In pea plants, the allele for smooth seeds (S) is dominant over the allele for wrinkled seeds (s). In an experiment, when two hybrids are crossed, what percent of the offspring share the same genotype as the parents? a. 0% b. 25% c. 50% d. 75% e. 100%
1. In pea plants, the allele for smooth seeds (S) is dominant over the allele for wrinkled seeds (s). In an experiment, when two hybrids are crossed, what percent of the offspring share the same genotype as the parents? a. 0% b. 25% c. 50% d. 75% e. 100%
2. Which of the following findings provides the best evidence that an abnormal trait is sex-linked? a. The trait always skips a generation. b. Some members of a family are carriers of the disease. c. The trait appears in all of the offspring. d. The trait is passed from mother to daughters. e. The trait is passed from mothers to sons.
2. Which of the following findings provides the best evidence that an abnormal trait is sex-linked? a. The trait always skips a generation. b. Some members of a family are carriers of the disease. c. The trait appears in all of the offspring. d. The trait is passed from mother to daughters. e. The trait is passed from mothers to sons.
3. An organism has three independently assorting traits AaBbCc. What fraction of its gametes will contain the recessive genes abc? a. 0 b. 1/8 c. 1/4 d. 1/2 e. 3/4
3. An organism has three independently assorting traits AaBbCc. What fraction of its gametes will contain the recessive genes abc? a. 0 b. 1/8 c. 1/4 d. 1/2 e. 3/4
4. The AB blood type in humans is best described as a. incomplete dominance b. codominance c. sex-linkage d. polygenic inheritance e. cytoplasmic inheritance
4. The AB blood type in humans is best described as a. incomplete dominance b. codominance c. sex-linkage d. polygenic inheritance e. cytoplasmic inheritance
5. If an individual who is homozygous dominant for a trait mates with an individual who is homozygous recessive for that trait, their offspring will be a. all homozygous dominant b. all homozygous recessive c. ½ homozygous dominant and ½ homozygous recessive d. all heterozygous e. ½ homozygous dominant and ½ heterozygous
5. If an individual who is homozygous dominant for a trait mates with an individual who is homozygous recessive for that trait, their offspring will be a. all homozygous dominant b. all homozygous recessive c. ½ homozygous dominant and ½ homozygous recessive d. all heterozygous e. ½ homozygous dominant and ½ heterozygous
6. In the fruit fly, Drosophila, the allele for a normal body (B) is dominant to the allele for hairy body (b). When two normal-bodied fruit flies were mated they produced 81 hair-bodied flies and 319 normal-bodied flies. The genotypes of the parents are most likely a. BB x bb b. BB x Bb c. Bb x Bb d. Bb x bb e. bb x bb
6. In the fruit fly, Drosophila, the allele for a normal body (B) is dominant to the allele for hairy body (b). When two normal-bodied fruit flies were mated they produced 81 hair-bodied flies and 319 normal-bodied flies. The genotypes of the parents are most likely a. BB x bb b. BB x Bb c. Bb x Bb d. Bb x bb e. bb x bb
7. What type of bonds joins one strand of DNA to another strand of DNA, forming a double helix? a. ionic bonds b. hydrogen bonds c. polar covalent bonds d. hydrophobic interactions e. nonpolar covalent bonds
7. What type of bonds joins one strand of DNA to another strand of DNA, forming a double helix? a. ionic bonds b. hydrogen bonds c. polar covalent bonds d. hydrophobic interactions e. nonpolar covalent bonds
8. Which scientist(s) identified DNA as the genetic material of inheritance? a. Mendel b. Watson and Crick c. Darwin d. Avery e. Okazaki
8. Which scientist(s) identified DNA as the genetic material of inheritance? a. Mendel b. Watson and Crick c. Darwin d. Avery e. Okazaki
9. DNA is composed of nucleotides. Which of the following best describes the components of a nucleotide? a. ribose and phosphate group b. ribose and nitrogenous base c. deoxyribose and a phosphate group d. ribose, deoxyribose and a nitrogenous base e. deoxyribose, phosphate group, and nitrogenous base
9. DNA is composed of nucleotides. Which of the following best describes the components of a nucleotide? a. ribose and phosphate group b. ribose and nitrogenous base c. deoxyribose and a phosphate group d. ribose, deoxyribose and a nitrogenous base e. deoxyribose, phosphate group, and nitrogenous base
10. Which of the following statements is false? a. Mutations are important in evolution. b. Errors in DNA replication can cause mutations. c. Mutagens are substances which cause cancer. d. Products of cellular metabolism can cause mutations. e. DNA polymerase proofreads newly synthesized DNA.
10. Which of the following statements is false? a. Mutations are important in evolution. b. Errors in DNA replication can cause mutations. c. Mutagens are substances which cause cancer. d. Products of cellular metabolism can cause mutations. e. DNA polymerase proofreads newly synthesized DNA.
11. In gel electrophoresis, DNA fragments migrate toward the electrode; the the fragment, the faster it moves through the gel. a. negative; smaller b. negative; larger c. positive; smaller d. positive; larger e. none of the above
11. In gel electrophoresis, DNA fragments migrate toward the electrode; the the fragment, the faster it moves through the gel. a. negative; smaller b. negative; larger c. positive; smaller d. positive; larger e. none of the above
12. Which of the following substances is found in RNA but not in DNA? a. adenine b. phosphate c. thymine d. deoxyribose e. ribose
12. Which of the following substances is found in RNA but not in DNA? a. adenine b. phosphate c. thymine d. deoxyribose e. ribose
13. Which of the following cellular organelles is most closely associated with the transcription activity of RNA? a. mitochondria b. nucleus c. ribosomes d. Golgi apparatus e. lysosome
13. Which of the following cellular organelles is most closely associated with the transcription activity of RNA? a. mitochondria b. nucleus c. ribosomes d. Golgi apparatus e. lysosome
14. Which of the following cellular organelles is most closely associated with the translation activity of RNA? a. mitochondria b. nucleus c. ribosomes d. Golgi apparatus e. lysosome
14. Which of the following cellular organelles is most closely associated with the translation activity of RNA? a. mitochondria b. nucleus c. ribosomes d. Golgi apparatus e. lysosome
15. If a messenger RNA codon is UAC, which of the following would be the complementary anticodon triplet in the trna? a. ATG b. AUC c. AUG d. ATT e. ATC
15. If a messenger RNA codon is UAC, which of the following would be the complementary anticodon triplet in the trna? a. ATG b. AUC c. AUG d. ATT e. ATC
16. The correct sequence between genes and their phenotypic expression is a. RNA-DNA-protein-trait b. DNA-RNA-protein-trait c. protein-dna-rna-trait d. trait-dna-rna-protein e. trait-protein-dna-rna
16. The correct sequence between genes and their phenotypic expression is a. RNA-DNA-protein-trait b. DNA-RNA-protein-trait c. protein-dna-rna-trait d. trait-dna-rna-protein e. trait-protein-dna-rna
17. During posttranslational modification, the polypeptide from a eukaryotic cell typically undergoes a substantial alteration that results in a. excision of introns b. addition of a poly(a) tail c. forming of peptide bond d. a change in the overall conformation of the polypeptide e. the synthesis of amino acids
17. During posttranslational modification, the polypeptide from a eukaryotic cell typically undergoes a substantial alteration that results in a. excision of introns b. addition of a poly(a) tail c. forming of peptide bond d. a change in the overall conformation of the polypeptide e. the synthesis of amino acids
18. All of the following enzymes are involved in the replicative process of DNA EXCEPT a. DNA helicase b. DNA polymerase c. RNA polymerase d. RNA primase e. DNA ligase
18. All of the following enzymes are involved in the replicative process of DNA EXCEPT a. DNA helicase b. DNA polymerase c. RNA polymerase d. RNA primase e. DNA ligase
19. Which of the following represents the maximum number of amino acids that could be incorporated into a polypeptide encoded by 21 nucleotides of mrna? a. 3 b. 7 c. 21 d. 42 e. 63
19. Which of the following represents the maximum number of amino acids that could be incorporated into a polypeptide encoded by 21 nucleotides of mrna? a. 3 b. 7 c. 21 d. 42 e. 63
a. uracil nucleotide b. guanine nucleotide c. translation d. transcription e. splicing 20. takes place only in eukaryotes 21. forms three hydrogen bonds when linked with cytosine 22. DNA RNA 23. found only in RNA
a. uracil nucleotide b. guanine nucleotide c. translation d. transcription e. splicing 20. takes place only in eukaryotes E 21. forms three hydrogen bonds when linked with cytosine B 22. DNA RNA D 23. found only in RNA A
a. Okazaki fragments b. transposons c. lagging strand d. leading strand e. hnrna 24. DNA segments that can move around the genome 25. The strand that is first assembled in discrete nucleotide segments 26. The discontinuous strand during DNA replication 27. Unprocessed RNA molecules that are precursors
a. Okazaki fragments b. transposons c. lagging strand d. leading strand e. hnrna 24. DNA segments that can move around the genome B 25. The strand that is first assembled in discrete nucleotide segments C 26. The discontinuous strand during DNA replication C 27. Unprocessed RNA molecules that are precursors E
a. phenotype b. codominance c. heterozygous d. dihybrid cross e. monohybrid cross 28. two different alleles for the same trait are observed in a single organism 29. the functional manifestations of gene activity in an organism 30. the individual expression of two inherited alleles
a. phenotype b. codominance c. heterozygous d. dihybrid cross e. monohybrid cross 28. two different alleles for the same trait are observed in a single organism C 29. the functional manifestations of gene activity in an organism A 30. the individual expression of two inherited alleles B