,DOWNLOAD THE Test Bank for Essentials of Genetics 9th Edition Klug
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Living organisms are categorized into two major groups based on the presence or absence of a nucleus. What
group is defined by the presence of a nucleus?
A) prokaryotic organism
B) bacterium
C) mitochondrial organism
D) eukaryotic organism
E) virus
Answer: D
2) What is the name of the membranous structure that compartmentalizes the cytoplasm of eukaryotic organisms?
A) cytosol
B) ribosome
C) endoplasmic reticulum
D) nucleoid
E) mitochondria
Answer: C
3) Organized by the centrioles, what structures are important in the movement of chromosomes during cell
division?
A) mitochondria
B) centromeres
C) spindle fibers
D) chloroplasts
E) cell walls
Answer: C
4) The diploid chromosome number of an organism is usually represented as 2n. Humans have a diploid
chromosome number of 46. What would be the expected haploid chromosome number in a human?
A) 23
B) 12
C) 24
D) 16
E) 92
Answer: A
5) During interphase of the cell cycle, .
A) sister chromatids move to opposite poles
B) DNA content essentially doubles
C) the nuclear membrane disappears
D) DNA recombines
E) RNA replicates
Answer: B
1
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,DOWNLOAD THE Test Bank for Essentials of Genetics 9th Edition Klug
6) If a typical somatic cell has 64 chromosomes, how many chromosomes are expected in each gamete of that
organism?
A) 8
B) 128
C) 32
D) 64
E) 16
Answer: C
7) In an organism with 52 chromosomes, how many bivalents would be expected to form during meiosis?
A) 13
B) 104
C) 26
D) 208
E) 52
Answer: C
8) The ant Myrmecia pilosula is found in Australia and is named bulldog because of its aggressive behavior. It is
particularly interesting because it carries all its genetic information in a single pair of chromosomes. In other
words, 2n = 2. (Males are haploid and have just one chromosome.) Which of the following figures would most
likely represent a correct configuration of chromosomes in a metaphase I cell of a female?
A) A
B) B
C) C
D) D
E) E
Answer: A
9) For the purposes of this question, assume that a G1 somatic cell nucleus in a female Myrmecia pilosula contains 2
picograms of DNA. How much DNA would be expected in a metaphase I cell of a female?
A) 8 picograms
B) 32 picograms
C) 4 picograms
D) 16 picograms
E) Not enough information is provided to answer the question.
Answer: C
2
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, DOWNLOADs2THEs2Tests2Banks2fors2Essentialss2ofs2Geneticss29ths2Editions2Kl
ug
10) Ans2interestings2groups2ofs2antss2consistss2ofs2severals2virtuallys2identical,s2closelys2relateds2species,s2withs2f
emaless2havings2chromosomes2numberss2ofs218,s220,s232,s248,s260,s262,s2ands264.s2Ifs2ones2crosseds2as2females
2ofs2speciess2(A)s2withs232s 2 chromosomess2ands2as2males2speciess2(B)s2withs29s2chromosomess2(maless2ares2
haploid,s2ands2eachs2gametes2containss2thes2ns2complement),s2hows2manys2chromosomess2woulds2ones2expe
cts2ins2thes2bodys2(somatic)s2cellss2ofs2thes2females2offspring?
A) 32
B) 9
C) 4.5
D) 41
E) 25
Answer:s 2 E
11) Whats2iss2 thes2 outcomes2 ofs2 synapsis,s2 as2 significants2events2 ins2 meiosis?
A) monads2 movements2 tos2 opposites2 poles
B) side-by-sides 2 alignments 2 ofs 2 homologouss 2 chromosomes
C) chiasmas2 segregation
D) side-by-sides 2 alignments 2 ofs 2 nonhomologouss 2 chromosomes
E) dyads2formatio
ns2Answer:s 2 B
12) Ins2as2healthys2male,s2hows2manys2sperms2cellss2woulds2bes2expecteds2tos2forms2froms2(a)s2400s2primarys2s
permatocytes?s2(b)s2400s2secondarys2spermatocytes?
A) (a)s2 400; (b)s2400
B) (a)s2 800; (b)s2800
C) (a)s2 1600; (b)s2800
D) (a)s2 400; (b)s2800
E) (a)s2 1600; (b)s21600
Answer:s 2 C
13) Ins2as2healthys2female,s2hows2manys2secondarys2oocytess2woulds2bes2expecteds2tos2forms2froms2100s2primar
ys2oocytes?s2Hows2manys2firsts2polars2bodiess2woulds2bes2expecteds2froms2100s2primarys2oocytes?
A) 50;s250
B) 200;s2 200
C) 100;s2 50
D) 100;s2 100
E) 200;s2 50
Answer:s 2 D
SHORTs2 ANSWER.s 2 Writes2 thes2 words2 ors2 phrases2 thats2 bests2 completess2 eachs2 statements2 ors2 answerss2 thes2 question.
14) Whichs2types2ofs2cells2structures2iss2thes2nucleoluss2organizers2(NOR)s2responsibles2fors
2producing?s2Answer:s 2 ribosome
15) Names2twos2cellulars2organelles,s2eachs2havings2genetics2material,s2thats2ares2involveds2ins2eithers2phot
osynthesiss2ors2respiration.
Answer:s 2 chloroplastss2 ands2 mitochondria
16) Lists2fours2termss2useds2tos2describes2thes2normals2morphologies,s2withs2respects2tos2arms2ratio,
s2ofs2eukaryotics2chromosomes.
Answer:s 2 metacentric,s2 submetacentric,s2 acrocentric,s2 telocentric
3
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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Living organisms are categorized into two major groups based on the presence or absence of a nucleus. What
group is defined by the presence of a nucleus?
A) prokaryotic organism
B) bacterium
C) mitochondrial organism
D) eukaryotic organism
E) virus
Answer: D
2) What is the name of the membranous structure that compartmentalizes the cytoplasm of eukaryotic organisms?
A) cytosol
B) ribosome
C) endoplasmic reticulum
D) nucleoid
E) mitochondria
Answer: C
3) Organized by the centrioles, what structures are important in the movement of chromosomes during cell
division?
A) mitochondria
B) centromeres
C) spindle fibers
D) chloroplasts
E) cell walls
Answer: C
4) The diploid chromosome number of an organism is usually represented as 2n. Humans have a diploid
chromosome number of 46. What would be the expected haploid chromosome number in a human?
A) 23
B) 12
C) 24
D) 16
E) 92
Answer: A
5) During interphase of the cell cycle, .
A) sister chromatids move to opposite poles
B) DNA content essentially doubles
C) the nuclear membrane disappears
D) DNA recombines
E) RNA replicates
Answer: B
1
mynursytest.store
,DOWNLOAD THE Test Bank for Essentials of Genetics 9th Edition Klug
6) If a typical somatic cell has 64 chromosomes, how many chromosomes are expected in each gamete of that
organism?
A) 8
B) 128
C) 32
D) 64
E) 16
Answer: C
7) In an organism with 52 chromosomes, how many bivalents would be expected to form during meiosis?
A) 13
B) 104
C) 26
D) 208
E) 52
Answer: C
8) The ant Myrmecia pilosula is found in Australia and is named bulldog because of its aggressive behavior. It is
particularly interesting because it carries all its genetic information in a single pair of chromosomes. In other
words, 2n = 2. (Males are haploid and have just one chromosome.) Which of the following figures would most
likely represent a correct configuration of chromosomes in a metaphase I cell of a female?
A) A
B) B
C) C
D) D
E) E
Answer: A
9) For the purposes of this question, assume that a G1 somatic cell nucleus in a female Myrmecia pilosula contains 2
picograms of DNA. How much DNA would be expected in a metaphase I cell of a female?
A) 8 picograms
B) 32 picograms
C) 4 picograms
D) 16 picograms
E) Not enough information is provided to answer the question.
Answer: C
2
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, DOWNLOADs2THEs2Tests2Banks2fors2Essentialss2ofs2Geneticss29ths2Editions2Kl
ug
10) Ans2interestings2groups2ofs2antss2consistss2ofs2severals2virtuallys2identical,s2closelys2relateds2species,s2withs2f
emaless2havings2chromosomes2numberss2ofs218,s220,s232,s248,s260,s262,s2ands264.s2Ifs2ones2crosseds2as2females
2ofs2speciess2(A)s2withs232s 2 chromosomess2ands2as2males2speciess2(B)s2withs29s2chromosomess2(maless2ares2
haploid,s2ands2eachs2gametes2containss2thes2ns2complement),s2hows2manys2chromosomess2woulds2ones2expe
cts2ins2thes2bodys2(somatic)s2cellss2ofs2thes2females2offspring?
A) 32
B) 9
C) 4.5
D) 41
E) 25
Answer:s 2 E
11) Whats2iss2 thes2 outcomes2 ofs2 synapsis,s2 as2 significants2events2 ins2 meiosis?
A) monads2 movements2 tos2 opposites2 poles
B) side-by-sides 2 alignments 2 ofs 2 homologouss 2 chromosomes
C) chiasmas2 segregation
D) side-by-sides 2 alignments 2 ofs 2 nonhomologouss 2 chromosomes
E) dyads2formatio
ns2Answer:s 2 B
12) Ins2as2healthys2male,s2hows2manys2sperms2cellss2woulds2bes2expecteds2tos2forms2froms2(a)s2400s2primarys2s
permatocytes?s2(b)s2400s2secondarys2spermatocytes?
A) (a)s2 400; (b)s2400
B) (a)s2 800; (b)s2800
C) (a)s2 1600; (b)s2800
D) (a)s2 400; (b)s2800
E) (a)s2 1600; (b)s21600
Answer:s 2 C
13) Ins2as2healthys2female,s2hows2manys2secondarys2oocytess2woulds2bes2expecteds2tos2forms2froms2100s2primar
ys2oocytes?s2Hows2manys2firsts2polars2bodiess2woulds2bes2expecteds2froms2100s2primarys2oocytes?
A) 50;s250
B) 200;s2 200
C) 100;s2 50
D) 100;s2 100
E) 200;s2 50
Answer:s 2 D
SHORTs2 ANSWER.s 2 Writes2 thes2 words2 ors2 phrases2 thats2 bests2 completess2 eachs2 statements2 ors2 answerss2 thes2 question.
14) Whichs2types2ofs2cells2structures2iss2thes2nucleoluss2organizers2(NOR)s2responsibles2fors
2producing?s2Answer:s 2 ribosome
15) Names2twos2cellulars2organelles,s2eachs2havings2genetics2material,s2thats2ares2involveds2ins2eithers2phot
osynthesiss2ors2respiration.
Answer:s 2 chloroplastss2 ands2 mitochondria
16) Lists2fours2termss2useds2tos2describes2thes2normals2morphologies,s2withs2respects2tos2arms2ratio,
s2ofs2eukaryotics2chromosomes.
Answer:s 2 metacentric,s2 submetacentric,s2 acrocentric,s2 telocentric
3
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