Tech Guru
Test Bank For Genetics A Conceptual
Approach 7th Edition By: Benjamin A.
Pierce
All Chapters with Rationales|A+ Graded
Te
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, Tech Guru
Chapter 1: Introduction to Genetics from Genetics: A Conceptual Approach
1.Which of the following best defines genetics?
A) The study of living organisms
B) The study of genes and heredity
C) The study of diseases and their causes
D) The study of cell structures
ANS: B) The study of genes and heredity
Genetics focuses specifically on how traits and characteristics are inherited through genes. This
foundational knowledge is crucial for understanding more complex genetic concepts.
Understanding genetics is essential for nurses, as they may deal with genetic conditions and
counseling.
2.Which term describes the observable characteristics of an organism?
A) Genotype
B) Phenotype
C) Allele
D) Chromosome
ANS: B) Phenotype
The phenotype refers to the physical expression of genetic traits, while genotype refers to the
genetic makeup. Nurses must be able to differentiate between these terms to provide effective
education and support to patients regarding genetic conditions.
3.What is the primary function of DNA?
A) To provide energy for cellular processes
B) To store and transmit genetic information
C) To catalyze biochemical reactions
D) To serve as a structural component of cells
Te
ANS: B) To store and transmit genetic information
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, Tech Guru
DNA holds the instructions for the development and functioning of living organisms, which is
central to genetic studies. Understanding the role of DNA is vital for nurses, especially when
discussing genetic testing and counseling.
4.Which of the following best describes alleles?
A) Different forms of a gene
B) The same form of a gene
C) Chromosomes that determine sex
D) Cells that contain genetic material
ANS: A) Different forms of a gene
Alleles represent variations of a particular gene, contributing to genetic diversity. Nurses must
understand alleles to help explain inheritance patterns and genetic disorders to patients.
5.If a person has two identical alleles for a trait, they are considered:
A) Homozygous
B) Heterozygous
C) Dominant
D) Recessive
ANS: A) Homozygous
Homozygous individuals have two copies of the same allele, while heterozygous individuals
have different alleles. This distinction is essential in genetics, as it influences the expression of
traits and the risk of genetic disorders.
6.What is a gene?
A) A segment of DNA that codes for a protein
B) The physical location of chromosomes
C) The complete set of DNA in an organism
D) A structure that carries nutrients in cells
ANS: A) A segment of DNA that codes for a protein
Te
Genes are the basic units of heredity and are crucial for producing proteins that carry out various
ch
functions in the body. Understanding gene function is essential for nurses to assess genetic risks
and provide appropriate patient education.
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, Tech Guru
7.Which genetic disorder is caused by a single gene mutation?
A) Cystic fibrosis
B) Down syndrome
C) Turner syndrome
D) Hemophilia
ANS: A) Cystic fibrosis
Cystic fibrosis is an autosomal recessive disorder resulting from mutations in the CFTR gene,
illustrating Mendelian inheritance patterns. Recognizing such disorders allows nurses to provide
better care and management strategies for affected individuals.
8.In Mendelian inheritance, what is the expected phenotypic ratio of a monohybrid cross?
A) 1:1
B) 3:1
C) 9:3:3:1
D) 1:2:1
ANS: B) 3:1
A monohybrid cross typically results in a 3:1 ratio of dominant to recessive phenotypes. This
knowledge is important for nurses involved in genetic counseling, as it helps explain inheritance
patterns to families.
9.Which of the following represents a carrier for a recessive genetic disorder?
A) AA
B) Aa
C) aa
D) None of the above
ANS: B) Aa
A carrier has one dominant and one recessive allele, showing no symptoms of the disorder but
capable of passing the recessive allele to offspring. Understanding carriers is vital in genetic
counseling and assessing family risks.
Te
10.What is the significance of the human genome project?
ch
A) To clone human genes
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Page | 4
r u
Test Bank For Genetics A Conceptual
Approach 7th Edition By: Benjamin A.
Pierce
All Chapters with Rationales|A+ Graded
Te
ch
Gu
Page | 1
r u
, Tech Guru
Chapter 1: Introduction to Genetics from Genetics: A Conceptual Approach
1.Which of the following best defines genetics?
A) The study of living organisms
B) The study of genes and heredity
C) The study of diseases and their causes
D) The study of cell structures
ANS: B) The study of genes and heredity
Genetics focuses specifically on how traits and characteristics are inherited through genes. This
foundational knowledge is crucial for understanding more complex genetic concepts.
Understanding genetics is essential for nurses, as they may deal with genetic conditions and
counseling.
2.Which term describes the observable characteristics of an organism?
A) Genotype
B) Phenotype
C) Allele
D) Chromosome
ANS: B) Phenotype
The phenotype refers to the physical expression of genetic traits, while genotype refers to the
genetic makeup. Nurses must be able to differentiate between these terms to provide effective
education and support to patients regarding genetic conditions.
3.What is the primary function of DNA?
A) To provide energy for cellular processes
B) To store and transmit genetic information
C) To catalyze biochemical reactions
D) To serve as a structural component of cells
Te
ANS: B) To store and transmit genetic information
ch
Gu
Page | 2
r u
, Tech Guru
DNA holds the instructions for the development and functioning of living organisms, which is
central to genetic studies. Understanding the role of DNA is vital for nurses, especially when
discussing genetic testing and counseling.
4.Which of the following best describes alleles?
A) Different forms of a gene
B) The same form of a gene
C) Chromosomes that determine sex
D) Cells that contain genetic material
ANS: A) Different forms of a gene
Alleles represent variations of a particular gene, contributing to genetic diversity. Nurses must
understand alleles to help explain inheritance patterns and genetic disorders to patients.
5.If a person has two identical alleles for a trait, they are considered:
A) Homozygous
B) Heterozygous
C) Dominant
D) Recessive
ANS: A) Homozygous
Homozygous individuals have two copies of the same allele, while heterozygous individuals
have different alleles. This distinction is essential in genetics, as it influences the expression of
traits and the risk of genetic disorders.
6.What is a gene?
A) A segment of DNA that codes for a protein
B) The physical location of chromosomes
C) The complete set of DNA in an organism
D) A structure that carries nutrients in cells
ANS: A) A segment of DNA that codes for a protein
Te
Genes are the basic units of heredity and are crucial for producing proteins that carry out various
ch
functions in the body. Understanding gene function is essential for nurses to assess genetic risks
and provide appropriate patient education.
Gu
Page | 3
r u
, Tech Guru
7.Which genetic disorder is caused by a single gene mutation?
A) Cystic fibrosis
B) Down syndrome
C) Turner syndrome
D) Hemophilia
ANS: A) Cystic fibrosis
Cystic fibrosis is an autosomal recessive disorder resulting from mutations in the CFTR gene,
illustrating Mendelian inheritance patterns. Recognizing such disorders allows nurses to provide
better care and management strategies for affected individuals.
8.In Mendelian inheritance, what is the expected phenotypic ratio of a monohybrid cross?
A) 1:1
B) 3:1
C) 9:3:3:1
D) 1:2:1
ANS: B) 3:1
A monohybrid cross typically results in a 3:1 ratio of dominant to recessive phenotypes. This
knowledge is important for nurses involved in genetic counseling, as it helps explain inheritance
patterns to families.
9.Which of the following represents a carrier for a recessive genetic disorder?
A) AA
B) Aa
C) aa
D) None of the above
ANS: B) Aa
A carrier has one dominant and one recessive allele, showing no symptoms of the disorder but
capable of passing the recessive allele to offspring. Understanding carriers is vital in genetic
counseling and assessing family risks.
Te
10.What is the significance of the human genome project?
ch
A) To clone human genes
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Page | 4
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