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complete Test Bank for Introduction to Genetic Analysis
12th Edition by Anthony J.F. Griffiths, John Doebley,
Catherine Peichel, and David A. Wassarman. This latest
updated test bank includes comprehensive genetics exam
questions with correct verified answers for all chapters.
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Chapter 01
1. The early 1900s was an important period for genetics due to which of the following major events?
a. the rediscovery of Gregor Mendel's scientific findings
b. Watson and Crick solving the structure of DNA
c. Walter Sutton and Theodore Boveri hypothesizing that chromosomes are the hereditary elements
d. the rediscovery of Gregor Mendel's scientific findings and Walter Sutton and Theodore Boveri hypothesizing that
chromosomes are the hereditary elements
e. All of the answer options are correct.
CORRECT ANSWER; e
2. A sample of normal double-stranded DNA was found to have a guanine content of 18%. What is the expected proportion of adenine?
a. 9%
b. 32%
c. 36%
d. 68%
e. 82%
CORRECT ANSWER; b
3. In one strand of DNA, the nucleotide sequence is 5'-ATGC-3'. The complementary sequence in the other strand must be
a. 3'-ATGC-5'.
b. 3'-TACG-5'.
c. 5'-ATCG-3'.
d. 5'-CGTA-3'.
e. 5'-TACG-3'.
CORRECT ANSWER; b
4. How many different DNA molecules that are eight-nucleotide-pairs long are theoretically possible?
a. 24
b. 32
c. 64
d. 256
e. 65,536
CORRECT ANSWER; e
5. Which of the following is/are TRUE about genes?
a. Genes are located on chromosomes.
b. Genes come in variants known as alleles.
c. Genes usually encode protein products.
d. All of the answer options are correct.
e. None of the answer options is correct.
CORRECT ANSWER; d
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6. Wild cats (Felis silvestris) and common mice (Mus musculus) are diploid. In wild cats, 2n = 38, while in common mice, 2n = 40. Based on
this information, we can conclude that wild-cat cells have
a. less DNA than common-mouse cells.
b. smaller genomes than common-mouse cells.
c. fewer DNA molecules than common-mouse cells.
d. fewer genes than common-mouse cells.
e. fewer sets of chromosomes than common-mouse cells.
CORRECT ANSWER; c
7. Which of the following is a component of DNA?
a. alanine
b. arginine
c. cysteine
d. guanine
e. tyrosine
CORRECT ANSWER; d
8. Which of the following is/are TRUE of the DNA structure solved by Watson and Crick?
a. It is a double-helical structure.
b. Sugar–phosphate backbone is always toward the outside of the DNA.
c. There are two hydrogen bonds between A and T and three hydrogen bonds between C and G.
d. There are four types of nitrogenous bases.
e. All of the answer options are correct.
CORRECT ANSWER; e
9. Which of the following is a CORRECT representation of the central dogma?
a. RNA → DNA → protein
b. protein → DNA → RNA
c. DNA → RNA → protein
d. DNA → protein → DNA
e. None of the answer options is correct.
CORRECT ANSWER; c
10. You have come across a dog (named Cindy) that does not have a tail. Interestingly, all the puppies produced by this dog don't have a tail. If the
lack of tail is caused by a genetic mutation, where has this mutation most likely taken place?
a. in Cindy's gametes
b. in the cells that should normally have given rise to Cindy's tail
c. in the cells that should normally have given rise to Cindy's and her puppies' tails
d. in all of Cindy's cells (including her gametes)
e. in a gamete of one of Cindy's parents
CORRECT ANSWER; a
11. Which of the following features makes a species suitable as a model organism?
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a. small organism
b. short generation time
c. small genome
d. produce large number of offspring
e. All of the answer options are correct.
CORRECT ANSWER; e
12. Using molecular techniques, researchers have knocked out both copies of gene G in a series of genetically identical mouse embryos. These
mice develop normally, except for their forelimbs, which are missing several small bones. What can be concluded from the results of this
experiment?
a. Gene G encodes a protein that is a crucial component of the forelimbs' small bones in mice.
b. Gene G encodes a protein that is normally only present in the forelimb cells of developing mice.
c. Gene G is necessary for proper development of the forelimbs' small bones in mice.
d. Gene G is normally only present in the forelimb cells of developing mice.
e. Gene G is normally only transcribed in the forelimb cells of developing mice.
CORRECT ANSWER; c
13. Who originated the one-gene–one-enzyme hypothesis?
a. Tatum and Beadle
b. Gregor Mendel
c. Watson and Crick
d. Franklin and Wilkins
e. Hershey and Chase
CORRECT ANSWER; a
14. What are alleles?
a. gene variants
b. enzymes
c. regulatory elements
d. de novo mutations
e. quantitative trait loci
CORRECT ANSWER; a
15. Which enzyme cuts DNA at a specific location?
a. polymerase
b. ligase
c. nuclease
d. allele
e. ribosome
CORRECT ANSWER; c
16. Which type of mutation is a unique DNA variant that exists in a child but in neither of its parents?
a. point mutation
b. de novo mutation
c. quantitative trait locus
d. single nucleotide polymorphism
e. dominant allele
CORRECT ANSWER; b
P a g e 4 | 285
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complete Test Bank for Introduction to Genetic Analysis
12th Edition by Anthony J.F. Griffiths, John Doebley,
Catherine Peichel, and David A. Wassarman. This latest
updated test bank includes comprehensive genetics exam
questions with correct verified answers for all chapters.
https://www.stuvia.com/user/gabrielucky https://www.stuvia.com/user/gabrielucky https://www.stuvia.com/user/gabrielucky
, https://www.stuvia.com/user/gabrielucky https://www.stuvia.com/user/gabrielucky https://www.stuvia.com/user/gabrielucky
2 https://www.stuvia.com/user/learnwithleo
Chapter 01
1. The early 1900s was an important period for genetics due to which of the following major events?
a. the rediscovery of Gregor Mendel's scientific findings
b. Watson and Crick solving the structure of DNA
c. Walter Sutton and Theodore Boveri hypothesizing that chromosomes are the hereditary elements
d. the rediscovery of Gregor Mendel's scientific findings and Walter Sutton and Theodore Boveri hypothesizing that
chromosomes are the hereditary elements
e. All of the answer options are correct.
CORRECT ANSWER; e
2. A sample of normal double-stranded DNA was found to have a guanine content of 18%. What is the expected proportion of adenine?
a. 9%
b. 32%
c. 36%
d. 68%
e. 82%
CORRECT ANSWER; b
3. In one strand of DNA, the nucleotide sequence is 5'-ATGC-3'. The complementary sequence in the other strand must be
a. 3'-ATGC-5'.
b. 3'-TACG-5'.
c. 5'-ATCG-3'.
d. 5'-CGTA-3'.
e. 5'-TACG-3'.
CORRECT ANSWER; b
4. How many different DNA molecules that are eight-nucleotide-pairs long are theoretically possible?
a. 24
b. 32
c. 64
d. 256
e. 65,536
CORRECT ANSWER; e
5. Which of the following is/are TRUE about genes?
a. Genes are located on chromosomes.
b. Genes come in variants known as alleles.
c. Genes usually encode protein products.
d. All of the answer options are correct.
e. None of the answer options is correct.
CORRECT ANSWER; d
P a g e 2 | 285
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6. Wild cats (Felis silvestris) and common mice (Mus musculus) are diploid. In wild cats, 2n = 38, while in common mice, 2n = 40. Based on
this information, we can conclude that wild-cat cells have
a. less DNA than common-mouse cells.
b. smaller genomes than common-mouse cells.
c. fewer DNA molecules than common-mouse cells.
d. fewer genes than common-mouse cells.
e. fewer sets of chromosomes than common-mouse cells.
CORRECT ANSWER; c
7. Which of the following is a component of DNA?
a. alanine
b. arginine
c. cysteine
d. guanine
e. tyrosine
CORRECT ANSWER; d
8. Which of the following is/are TRUE of the DNA structure solved by Watson and Crick?
a. It is a double-helical structure.
b. Sugar–phosphate backbone is always toward the outside of the DNA.
c. There are two hydrogen bonds between A and T and three hydrogen bonds between C and G.
d. There are four types of nitrogenous bases.
e. All of the answer options are correct.
CORRECT ANSWER; e
9. Which of the following is a CORRECT representation of the central dogma?
a. RNA → DNA → protein
b. protein → DNA → RNA
c. DNA → RNA → protein
d. DNA → protein → DNA
e. None of the answer options is correct.
CORRECT ANSWER; c
10. You have come across a dog (named Cindy) that does not have a tail. Interestingly, all the puppies produced by this dog don't have a tail. If the
lack of tail is caused by a genetic mutation, where has this mutation most likely taken place?
a. in Cindy's gametes
b. in the cells that should normally have given rise to Cindy's tail
c. in the cells that should normally have given rise to Cindy's and her puppies' tails
d. in all of Cindy's cells (including her gametes)
e. in a gamete of one of Cindy's parents
CORRECT ANSWER; a
11. Which of the following features makes a species suitable as a model organism?
P a g e 3 | 285
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a. small organism
b. short generation time
c. small genome
d. produce large number of offspring
e. All of the answer options are correct.
CORRECT ANSWER; e
12. Using molecular techniques, researchers have knocked out both copies of gene G in a series of genetically identical mouse embryos. These
mice develop normally, except for their forelimbs, which are missing several small bones. What can be concluded from the results of this
experiment?
a. Gene G encodes a protein that is a crucial component of the forelimbs' small bones in mice.
b. Gene G encodes a protein that is normally only present in the forelimb cells of developing mice.
c. Gene G is necessary for proper development of the forelimbs' small bones in mice.
d. Gene G is normally only present in the forelimb cells of developing mice.
e. Gene G is normally only transcribed in the forelimb cells of developing mice.
CORRECT ANSWER; c
13. Who originated the one-gene–one-enzyme hypothesis?
a. Tatum and Beadle
b. Gregor Mendel
c. Watson and Crick
d. Franklin and Wilkins
e. Hershey and Chase
CORRECT ANSWER; a
14. What are alleles?
a. gene variants
b. enzymes
c. regulatory elements
d. de novo mutations
e. quantitative trait loci
CORRECT ANSWER; a
15. Which enzyme cuts DNA at a specific location?
a. polymerase
b. ligase
c. nuclease
d. allele
e. ribosome
CORRECT ANSWER; c
16. Which type of mutation is a unique DNA variant that exists in a child but in neither of its parents?
a. point mutation
b. de novo mutation
c. quantitative trait locus
d. single nucleotide polymorphism
e. dominant allele
CORRECT ANSWER; b
P a g e 4 | 285
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