Question 1

The person that a pedigree chart begins with is called the:

Accepted Answer

A)  proband. 
B)  proposita. 
C)  propositus. 
D)  carrier. 
A)  proband. 
B)  proposita. 
C)  propositus. 
D)  carrier.

Question 2

A 15-year-old female is diagnosed with Prader-Willi syndrome. This condition is an example of:

Accepted Answer

A)  gene imprinting. 
B)  an autosomal recessive trait. 
C)  an autosomal dominant trait. 
D)  a sex-linked trait. 
A)  gene imprinting. 
B)  an autosomal recessive trait. 
C)  an autosomal dominant trait. 
D)  a sex-linked trait.

Question 3

If a person is a chromosomal mosaic, the person may:

Accepted Answer

A)  be a carrier of the genetic disease. 
B)  have a mild form of the genetic disease. 
C)  have two genetic diseases. 
D)  be sterile as a result of the genetic disease. 
A)  be a carrier of the genetic disease. 
B)  have a mild form of the genetic disease. 
C)  have two genetic diseases. 
D)  be sterile as a result of the genetic disease.

Question 4

A 20-year-old pregnant female gives birth to a stillborn child. Autopsy reveals that the fetus has 92 chromosomes. Which of the following describes this condition?

Accepted Answer

A)  Euploidy 
B)  Triploidy 
C)  Tetraploidy 
D)  Aneuploidy 
A)  Euploidy 
B)  Triploidy 
C)  Tetraploidy 
D)  Aneuploidy

Question 5

A child is diagnosed with cystic fibrosis. History reveals that the child's parents are siblings. Cystic fibrosis was most likely the result of:

Accepted Answer

A)  X inactivation. 
B)  genomic imprinting. 
C)  consanguinity. 
D)  obligate carriers. 
A)  X inactivation. 
B)  genomic imprinting. 
C)  consanguinity. 
D)  obligate carriers.

Question 6

When considering how nitrogenous bases pair to form a double helix, which of the following pairs occur most often?

Accepted Answer

A)  Cytosine-Guanine 
B)  Thymine-Cytosine 
C)  Adenine-Cytosine 
D)  Guanine-Thymine 
A)  Cytosine-Guanine 
B)  Thymine-Cytosine 
C)  Adenine-Cytosine 
D)  Guanine-Thymine

Question 7

Cystic fibrosis is caused by an _____ gene.

Accepted Answer

A)  X-linked dominant 
B)  X-linked recessive 
C)  autosomal dominant 
D)  autosomal recessive 
A)  X-linked dominant 
B)  X-linked recessive 
C)  autosomal dominant 
D)  autosomal recessive

Question 8

The condition in which an extra portion of a chromosome is present in each cell is called:

Accepted Answer

A)  fragmented trisomy. 
B)  partial trisomy. 
C)  translocated trisomy. 
D)  Down syndrome. 
A)  fragmented trisomy. 
B)  partial trisomy. 
C)  translocated trisomy. 
D)  Down syndrome.

Question 9

To express a polygenic trait:

Accepted Answer

A)  genes must interact with the environment. 
B)  several genes must act together. 
C)  multiple mutations must occur in the same family. 
D)  in situ cloning must occur. 
A)  genes must interact with the environment. 
B)  several genes must act together. 
C)  multiple mutations must occur in the same family. 
D)  in situ cloning must occur.

Question 10

An ordered photographic display of a set of chromosomes from a single cell is a(n):

Accepted Answer

A)  metaphase spread. 
B)  autosomal spread. 
C)  karyotype. 
D)  anaphase spread. 
A)  metaphase spread. 
B)  autosomal spread. 
C)  karyotype. 
D)  anaphase spread.

Question 11

Which of the following mutations have the most significant effect on protein synthesis?

Accepted Answer

A)  Base pair substitutions 
B)  Silent mutations 
C)  Intron mutations 
D)  Frameshift mutations 
A)  Base pair substitutions 
B)  Silent mutations 
C)  Intron mutations 
D)  Frameshift mutations

Question 12

Joey, age 9, is admitted to a pediatric unit with Duchenne muscular dystrophy. He inherited this condition through a:

Accepted Answer

A)  sex-linked dominant trait. 
B)  sex-influenced trait. 
C)  sex-limited trait. 
D)  sex-linked recessive trait. 
A)  sex-linked dominant trait. 
B)  sex-influenced trait. 
C)  sex-limited trait. 
D)  sex-linked recessive trait.

Question 13

The regions of the heterogeneous nuclear RNA that must be spliced out to form functional RNA are called:

Accepted Answer

A)  promotor sites. 
B)  introns. 
C)  exons. 
D)  anticodon. 
A)  promotor sites. 
B)  introns. 
C)  exons. 
D)  anticodon.

Question 14

A somatic cell that does not contain a multiple of 23 chromosomes is called:

Accepted Answer

A)  a diploid cell. 
B)  a euploid cell. 
C)  a polyploidy cell. 
D)  a haploid cell. 
A)  a diploid cell. 
B)  a euploid cell. 
C)  a polyploidy cell. 
D)  a haploid cell.

Exam 2: Genes and Genetic Diseases

The person that a pedigree chart begins with is called the:

A 15-year-old female is diagnosed with Prader-Willi syndrome. This condition is an example of:

If a person is a chromosomal mosaic, the person may:

A 20-year-old pregnant female gives birth to a stillborn child. Autopsy reveals that the fetus has 92 chromosomes. Which of the following describes this condition?

A child is diagnosed with cystic fibrosis. History reveals that the child's parents are siblings. Cystic fibrosis was most likely the result of:

When considering how nitrogenous bases pair to form a double helix, which of the following pairs occur most often?

Cystic fibrosis is caused by an _____ gene.

The condition in which an extra portion of a chromosome is present in each cell is called:

To express a polygenic trait:

An ordered photographic display of a set of chromosomes from a single cell is a(n):

Which of the following mutations have the most significant effect on protein synthesis?

Joey, age 9, is admitted to a pediatric unit with Duchenne muscular dystrophy. He inherited this condition through a:

The regions of the heterogeneous nuclear RNA that must be spliced out to form functional RNA are called:

A somatic cell that does not contain a multiple of 23 chromosomes is called:

Cellular Biology

Altered Cellular and Tissue Biology

Fluids and Electrolytes, Acids and Bases

Innate Defenses: Inflammation

Adaptive Immunity

Hypersensitivities, Infection, and Immune Deficiencies

Stress and Disease

Biology of Cancer and Tumor Spread

Cancer Epidemiology, Manifestations, and Treatment

Cancer in Children

Structure and Function of the Neurologic System

Pain, Temperature, Sleep, and Sensory Function

Concepts of Neurologic Dysfunction

Alterations of Neurologic Function

Alterations of Neurologic Function in Children

Mechanisms of Hormonal Regulation

Alterations of Hormonal Regulation

Structure and Function of the Hematologic System

Alterations of Hematologic Function

Alterations of Hematologic Function in Children

Structure and Function of the Cardiovascular and Lymphatic Systems

Alterations of Cardiovascular Function

Alterations of Cardiovascular Function in Children

Structure and Function of the Pulmonary System

Alterations of Pulmonary Function

Alterations of Pulmonary Function in Children

Structure and Function of the Renal and Urologic Systems

Alterations of Renal and Urinary Tract Function

Alterations of Renal and Urinary Tract Function in Children

Structure and Function of the Reproductive Systems

Alterations of the Reproductive Systems, Including Sexually Transmitted Infections

Structure and Function of the Digestive System

Alterations of Digestive Function

Alterations of Digestive Function in Children

Structure and Function of the Musculoskeletal System

Alterations of Musculoskeletal Function

Alterations of Musculoskeletal Function in Children

Structure, Function, and Disorders of the Integument

Alterations of the Integument in Children

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