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Genetics Essentials: Concepts and Connections 5th Edition by
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Benjamin A. Pierce
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,www.PlusBay.Plus
,TABLE OF CONTENT
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Chapter 01: Introduction to Genetics .................................................................................................................... 3
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Chapter 02: Chromosomes and Cellular Reproduction .......................................................................................15
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Chapter 03: Basic Principles of Heredity ............................................................................................................. 32
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Chapter 04: Extensions and Modifications of Basic Principles ......................................................................... 59
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Chapter 05: Linkage, Recombination, and Eukaryotic Gene Mapping .............................................................98
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Chapter 06: Chromosome Variation ................................................................................................................... 115
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Chapter 07: Bacterial and Viral Genetic Systems .............................................................................................. 139
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Chapter 08 DNA: The Chemical Nature of the Gene......................................................................................... 152
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Chapter 09: DNA Replication and Recombination ............................................................................................ 181
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Chapter 10: From DNA to Proteins: Transcription and RNA Processing......................................................... 198
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Chapter 11: From DNA to Proteins: Translation ................................................................................................ 224
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Chapter 12: Control of Gene Expression............................................................................................................ 244
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Chapter 13: Gene Mutations, Transposable Elements, and DNA Repair ........................................................ 278
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Chapter 14: Molecular Genetic Analysis and Biotechnology ............................................................................ 298
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Chapter 15: Genomics and Proteomics ...............................................................................................................314
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Chapter 16: Cancer Genetics .............................................................................................................................. 332
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Chapter 17: Quantitative Genetics ..................................................................................................................... 346
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Chapter 18: Population and Evolutionary Genetics ..........................................................................................366
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www.PlusBay.Plus
, Chapter 01: Introduction to Genetics
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1. Albinism is rare in most human populations, occurring at a frequency of about 1 in 20,000 people. How
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ever, the trait occurs at a frequency of 1 in 200 in certain Hopi villages of Black Mesa in Arizona. Explain i
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n terms of natural selection why albinism is so rare in most human populations.
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ANSWER: In most populations, there is fairly strong selection against albinism because albinos don’t prod
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uce melanin, causing their skin cells not to be protected from the damaging effects of sunligh
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t. Also, the lack of melanin in their eyes causes them to have poor eyesight. Finally, in most cu
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ltures albinos are seen as abnormal, and they are not normally sought out for marriage and m
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ating. Therefore, in most populations the alleles that cause albinism are selected against, and t
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hey decrease in frequency or are kept at a low level, causing the recessive trait to be rare.
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2. Albinism is rare in most human populations, occurring at a frequency of about 1 in 20,000 people. How
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ever, the trait occurs at a frequency of 1 in 200 in certain Hopi villages of Black Mesa in Arizona. Explain i
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n terms of natural selection why the trait is so much more common among the Hopis of Black Mesa.
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ANSWER: Albinos occupy a privileged position among the Hopis of Black Mesa. In this culture, albinos
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are viewed as especially pretty, clean, and intelligent, and they often occupy positions of l
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eadership. Albinos are celebrated in the villages as a sign of purity of Hopi blood in the co
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mmunity.
Furthermore, albinos are often excused from normal male field labor because of their sensitivi ud ud ud ud ud ud ud ud ud ud ud ud ud
ty to sunlight, causing them to be left behind in the village with the women during the dayti
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me. This allows them extra mating opportunities compared to the other men of the village. T
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herefore, the alleles that cause albinism are either selected for in this culture or at least not s
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elected against as strongly as in other cultures, allowing the trait to occur at a much higher fr
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equency.
3. Which one of the following pairings between the subdiscipline of genetics and the phenome
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non is INCORRECT?
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a. evolution—population genetics ud
b. gene regulation—molecular genetics
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c. allelic frequency alteration—population genetics
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d. arrangement of genes on chromosome—transmission genetics ud ud ud ud ud
e. chemical nature of the gene—transmission geneticsud ud ud ud ud
ANSWER: e ud
4. Which one of the following topics of research belongs to the discipline of transmission genetics?
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a. inheritance pattern of gene alleles ud ud ud ud
b. mechanism of DNA replication ud ud ud
c. gene expression patterns ud ud
d. evolution
e. chemical modification of nucleic acids ud ud ud ud
ANSWER: a ud
5. The complete genetic makeup of an organism is referred to as its
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www.PlusBay.Plus
Genetics Essentials: Concepts and Connections 5th Edition by
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Benjamin A. Pierce
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,www.PlusBay.Plus
,TABLE OF CONTENT
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Chapter 01: Introduction to Genetics .................................................................................................................... 3
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Chapter 02: Chromosomes and Cellular Reproduction .......................................................................................15
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Chapter 03: Basic Principles of Heredity ............................................................................................................. 32
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Chapter 04: Extensions and Modifications of Basic Principles ......................................................................... 59
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Chapter 05: Linkage, Recombination, and Eukaryotic Gene Mapping .............................................................98
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Chapter 06: Chromosome Variation ................................................................................................................... 115
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Chapter 07: Bacterial and Viral Genetic Systems .............................................................................................. 139
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Chapter 08 DNA: The Chemical Nature of the Gene......................................................................................... 152
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Chapter 09: DNA Replication and Recombination ............................................................................................ 181
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Chapter 10: From DNA to Proteins: Transcription and RNA Processing......................................................... 198
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Chapter 11: From DNA to Proteins: Translation ................................................................................................ 224
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Chapter 12: Control of Gene Expression............................................................................................................ 244
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Chapter 13: Gene Mutations, Transposable Elements, and DNA Repair ........................................................ 278
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Chapter 14: Molecular Genetic Analysis and Biotechnology ............................................................................ 298
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Chapter 15: Genomics and Proteomics ...............................................................................................................314
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Chapter 16: Cancer Genetics .............................................................................................................................. 332
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Chapter 17: Quantitative Genetics ..................................................................................................................... 346
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Chapter 18: Population and Evolutionary Genetics ..........................................................................................366
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www.PlusBay.Plus
, Chapter 01: Introduction to Genetics
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1. Albinism is rare in most human populations, occurring at a frequency of about 1 in 20,000 people. How
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ever, the trait occurs at a frequency of 1 in 200 in certain Hopi villages of Black Mesa in Arizona. Explain i
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n terms of natural selection why albinism is so rare in most human populations.
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ANSWER: In most populations, there is fairly strong selection against albinism because albinos don’t prod
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uce melanin, causing their skin cells not to be protected from the damaging effects of sunligh
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t. Also, the lack of melanin in their eyes causes them to have poor eyesight. Finally, in most cu
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ltures albinos are seen as abnormal, and they are not normally sought out for marriage and m
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ating. Therefore, in most populations the alleles that cause albinism are selected against, and t
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hey decrease in frequency or are kept at a low level, causing the recessive trait to be rare.
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2. Albinism is rare in most human populations, occurring at a frequency of about 1 in 20,000 people. How
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ever, the trait occurs at a frequency of 1 in 200 in certain Hopi villages of Black Mesa in Arizona. Explain i
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n terms of natural selection why the trait is so much more common among the Hopis of Black Mesa.
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ANSWER: Albinos occupy a privileged position among the Hopis of Black Mesa. In this culture, albinos
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are viewed as especially pretty, clean, and intelligent, and they often occupy positions of l
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eadership. Albinos are celebrated in the villages as a sign of purity of Hopi blood in the co
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mmunity.
Furthermore, albinos are often excused from normal male field labor because of their sensitivi ud ud ud ud ud ud ud ud ud ud ud ud ud
ty to sunlight, causing them to be left behind in the village with the women during the dayti
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me. This allows them extra mating opportunities compared to the other men of the village. T
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herefore, the alleles that cause albinism are either selected for in this culture or at least not s
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elected against as strongly as in other cultures, allowing the trait to occur at a much higher fr
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equency.
3. Which one of the following pairings between the subdiscipline of genetics and the phenome
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non is INCORRECT?
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a. evolution—population genetics ud
b. gene regulation—molecular genetics
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c. allelic frequency alteration—population genetics
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d. arrangement of genes on chromosome—transmission genetics ud ud ud ud ud
e. chemical nature of the gene—transmission geneticsud ud ud ud ud
ANSWER: e ud
4. Which one of the following topics of research belongs to the discipline of transmission genetics?
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a. inheritance pattern of gene alleles ud ud ud ud
b. mechanism of DNA replication ud ud ud
c. gene expression patterns ud ud
d. evolution
e. chemical modification of nucleic acids ud ud ud ud
ANSWER: a ud
5. The complete genetic makeup of an organism is referred to as its
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www.PlusBay.Plus
