Test Bank For Introduction To Genetic Analysis 12Th Edition, By Anthony J.f. Griffiths.isbn:978-1319286446 Complete Guide All Chapters Covered 100% Verified A+ Grade Assured!!!!!

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Chapter 01:The Genetics Revolution t7 7
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1. Theearly 1900s was an important period forgenetics dueto which ofthe following major events?
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a. the rediscovery of Gregor Mendel's scientific findings
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b. Watson andCrick solvingthe structureof DNA t7 t7 t 7 t7 t 7



c. Walter Sutton and Theodore Boveri hypothesizing that chromosomes are the hereditary elements
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d. the rediscovery of Gregor Mendel's scientific findings and Walter Sutton and Theodore Bover i
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hypothesizing that chromosomes are the hereditary elements
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e. All of the answer options are correct.
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ANSWER: e

2. A sample of normal double-
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stranded DNA was found to have a guanine content of 18%. What is the expected proportion of adenine?
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a. 9%
b. 32%
c. 36%
d. 68%
e. 82%
ANSWER: b

3. In one strand of DNA, the nucleotide sequence is 5'-
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ATGC-
3'. The complementary sequence in the other strand must b
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a. 3'-ATGC-5'.
b. 3'-TACG-5'.
c. 5'-ATCG-3'.
d. 5'-CGTA-3'.
e. 5'-TACG-3'.
ANSWER: b

4. How many different DNA molecules that are eight-nucleotide-pairs long are theoretically possible?
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a. 24
b. 32
c. 64
d. 256
e. 65,536
ANSWER: e

5. Which of the following is/are TRUE about genes?
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a. Genes arelocated on chromosomes. b3 t7 t7 t7



b. Genes come in variants known as alleles. b3 b3 t7 t7 b3 t7



c. Genes usually encode protein products. t7 t7 t7 t7



d. All of the answer options are correct.
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e. None of the answer options is correct. t7 t7 t7 t7 t7 t7



ANSWER: d


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6. Wild cats (Felis silvestris) and common mice (Mus musculus) are diploid. In wild cats, 2n = 38, while i n
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common mice, 2n = 40. Based on this information, we can conclude that wild-cat cells have
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a. less DNA than common-mouse cells.
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b. smaller genomes than common-mouse cells. t7 t7 bt7 t7



c. fewer DNA molecules than common-mouse cells. t7 t7 t7 t7 t7



d. fewergenes than common-mouse cells. b3 t7 t7



e. fewer sets of chromosomes than common-mouse cells.
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ANSWER: c

7. Which of the following is a component of DNA?
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a. alanine
b. arginine
c. cysteine
d. guanine
e. tyrosine
ANSWER: d

8. Which of the following is/are TRUE ofthe DNA structure solved by Watson and Crick?
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a. It is a double-helical structure.
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b. Sugar–phosphate backbone is always toward the outside ofthe DNA. t7 t7 t7 t7 t7 t7 t7 t7



c. Thereare twohydrogen bonds between A and Tand threehydrogen bonds between C and G.
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d. Thereare four types of nitrogenous bases. t7 t7 t7 t7 t7



e. All of the answer options are correct.
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ANSWER: e

9. Which of the following is a CORRECT representation of the central dogma?
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a. RNA→ DNA → protein t7 t7 t7



b. protein → DNA → RNA t7 t7 t7 t7



c. DNA → RNA → protein b3 t7 t7 t7



d. DNA → protein → DNA t7 t7 t7 t7



e. None of the answer options is correct. t7 t7 t7 t7 t7 t7



ANSWER: c

10. You have come across a dog (named Cindy) that does not have a tail. Interestingly, all the puppies produc
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ed by this dog don't have a tail. If the lack of tail is caused by a genetic mutation, where has this mutation
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m ost lik ely taken place?
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a. in Cindy's gametes
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b. in the cells that should normally have given rise to Cindy's tail
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c. inthe cells that should normally have given rise to Cindy's and her puppies' tails
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d. in all ofCindy's cells (including her gametes)
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e. in a gamete of one of Cindy's parents
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ANSWER: a

11. Whichof the following features makes a species suitable as a model organism?
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a. small organism t7



b. short generation time v# t7



c. smallgenome
d. produce large number of offspring t7 t7 t7 t7



e. All of the answer options are correct.
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ANSWER: e

12. Using molecular techniques, researchers have knocked out both copies of gene G in a series of genetically i
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7dentical mouse embryos. These mice develop normally, except for their forelimbs, which are missing sever a
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l s mall bones. What can be concluded from the results of this experiment?
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a. GeneG encodes a protein that is a crucial component of the forelimbs' small bones in mice.
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b. GeneG encodes aprotein that is normally only present in theforelimb cells ofdeveloping mice.
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c. GeneGis necessary for proper development of the forelimbs' small bones in mice.
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d. Gene Gis normally only present in theforelimb cells of developing mice.
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e. GeneGisnormally only transcribed in the forelimb cells of developing mice.
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ANSWER: c

13. Who originated the one-gene–one-enzyme hypothesis?
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a. Tatum and Beadle t7 t7



b. Gregor Mendel t7



c. Watson and Crick v# b3



d. Franklin and Wilkins t7 t7



e. Hershey and Chase t7 t7



ANSWER: a

14. What are alleles? b3 t7


a. gene variants t7



b. enzymes
c. regulatory elements t7



d. denovo mutations t 7



e. quantitative trait loci t7 t7



ANSWER: a

15. Whichenzymecuts DNA at a specific location? t7 t7 t7 v# t7


a. polymerase
b. ligase
c. nuclease
d. allele
e. ribosome
ANSWER: c

16. Which type of mutation is a unique DNA variant that exists in a child but in neither of its parents?
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a. point mutation t7



b. de novo mutation
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