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2nd Edition (Beery, 2019), Chapter 1-20
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, Chapter1: DNAStructure andFunction d d d d d
Multiple Choice d
Identify the choice that best completes the statement or answers the question.
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ddd d A. 1. In which body or cell area are most genes in humans located?
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A. Nucleus
B. Mitochondrion
C. Cytoplasm
D. Plasma membrane d
ddd d A. 2. Which condition or statement exemplifies the concept of genomics rather than genetics?
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A. The gene for insulin is located on chromosome 11 in all people.
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B. Expression of any single gene is dependent on inheriting two alleles. d d d d d d d d d d
C. Sex-linked recessive disorders affect males more often than females. d d d d d d d d
D. One allele for each gene is inherited from the mother, and one is inherited from
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the father.
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ddd d A. 3. What is the purpose of phosphorous in a DNAstrand?
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A. Linking the nucleotides into a strand d d d d d
B. Holding complementary strands together d d d
C. Ensuring that a purine is always paired with a pyrimidine d d d d d d d d d
D. Preventing the separation of double-stranded DNA into single-stranded DNA d d d d d d d d
ddd d A. 4. What is the term used to define alternative forms of a gene that may result in different
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expression of the trait coded for by that gene?
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A. Alleles
B. Bases
C. Centromeres
D. Diploids
ddd d D. 5. What percentage of bases in a stretch of double-stranded DNA that contains 30% guanine
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(G) bases would be adenine (A)?
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A. 70% d d
B. 60% d d
C. 30% ddd
D. 20% d d
ddddC. 6. What is the term used to describe the organized picture of the paired chromosomes within a
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cell used to determine whether chromosome numbers, structures, and banding patterns
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are normal?
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A. Pedigree
B. Phenotype
C. Karyotype
D. Autotype
ddd d D. 7. What would be the sequence of DNAthat is complementary to a DNAsection with the base
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d sequence of GGTCAATCCTTAG? d d
A. GATTCCTAACTGG
B. TTGACCGAAGGCT
C. AACTGGCTTCCGA
D. CCAGTTAGGAATC
, ddd d B. 8. Which of these complementary base pairs form the strongest or “tightest” association?
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A. Adenine and thymine d d
B. Cytosine and guanine d d
C. Guanine and thymine d d
D. Cytosine and adenine d d
ddd d A 9. What activity occurs during M phase of the cell cycle?
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A. The cell undergoes cytokinesis. d d d
B. Activity stops, and the cell “sleeps.” d d d d d
C. All DNA is completely replicated. d d d d
D. The cell greatly increases protein synthesis.
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ddd d B. 10. Which chromosome number represents the euploid state for normal human somatic cells?
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A. 44
B. 46
C. 47
D. 48
ddd d A. 11. How does the proteome differ from the genome?
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A. The proteome changes in response to intracellular and extracellular signals.
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B. The genome changes in response to intracellular and extracellular signals.
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C. The proteome is stable in somatic cells and unstable in germ cells, whereas
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the genome is stable in both somatic cells and germ cells.
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D. The genome is stable in somatic cells and unstable in germ cells, whereas
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the proteome is stable in both somatic cells and germ cells.
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dddd C. 12. What is the most outstanding feature of a mature haploid cell?
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A. It is usually homozygous. d d d
B. The sex chromosomes are missing d d d d
C. Only one chromosome of each pair is present. d d d d d d d
D. DNAsynthesis occurs after mitosis instead of before. d d d d d d d
ddd d D. 13. At what phase of the cell cycle are chromosomes visible as separate structures?
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A. G1
B. G2
C. S
D. M
ddd d B. 14. Which statement about the cell cycle phase of G0 is true?
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A. Hyperplastic growth in place of hypertrophic growth d d d d d d
B. Performance of specific differentiated functions d d d d
C. Initiation and completion of nucleokinesis d d d d
D. Replication of DNA d d
ddd d B. 15. What is the result of normal DNA replication?
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A. Formation of two new daughter cells d d d d d
B. Formation of two identical sets of DNA d d d d d d
C. Disappearance of the original parent cell d d d d d
D. Activation and attachment of spindle fibers d d d d d