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