Question 1

Neurofibromatosis of von Recklinghausen is characterized by

Accepted Answer

A)  multiple neurofibromas appearing as macules of various sizes. 
B)  inevitable malignant transformation. 
C)  oral involvement in about 90% of patients. 
D)  café au lait pigmentation of the skin in 90% of patients. 
A)  multiple neurofibromas appearing as macules of various sizes. 
B)  inevitable malignant transformation. 
C)  oral involvement in about 90% of patients. 
D)  café au lait pigmentation of the skin in 90% of patients.

Question 2

__________ is characterized by very large, pyramid-shaped molars with large pulp chambers.

Accepted Answer

A)  Amelogenesis imperfecta 
B)  Dentinogenesis imperfecta 
C)  Taurodontism 
D)  Dentin dysplasia 
A)  Amelogenesis imperfecta 
B)  Dentinogenesis imperfecta 
C)  Taurodontism 
D)  Dentin dysplasia

Question 3

Which syndrome is characterized by intestinal polyps, which become malignant at age 30 and after?

Accepted Answer

A)  Osteogenesis imperfecta 
B)  Nevoid basal cell carcinoma syndrome 
C)  Mandibulofacial dysostosis 
D)  Gardner syndrome 
A)  Osteogenesis imperfecta 
B)  Nevoid basal cell carcinoma syndrome 
C)  Mandibulofacial dysostosis 
D)  Gardner syndrome

Question 4

Ribonucleic acid (RNA) contains uracil rather than the base _____ found in DNA.

Accepted Answer

A)  adenine 
B)  guanine 
C)  cytosine 
D)  thymine 
A)  adenine 
B)  guanine 
C)  cytosine 
D)  thymine

Question 5

Which statement is true regarding management of patients with cyclic neutropenia?

Accepted Answer

A)  Preventive antibiotic therapy is instituted to protect against secondary opportunistic infections. 
B)  Treatment should be done when the circulating neutrophil count is low to reduce the risk of complications such as gingival hemorrhage and secondary infection. 
C)  Dental hygiene care increases the risk of opportunistic infections in patients with cyclic neutropenia. 
D)  Patients are treated periodically with vitamin D to reduce symptoms. 
A)  Preventive antibiotic therapy is instituted to protect against secondary opportunistic infections. 
B)  Treatment should be done when the circulating neutrophil count is low to reduce the risk of complications such as gingival hemorrhage and secondary infection. 
C)  Dental hygiene care increases the risk of opportunistic infections in patients with cyclic neutropenia. 
D)  Patients are treated periodically with vitamin D to reduce symptoms.

Question 6

In DNA a sequence of thymine, adenine, and cytosine (TAC) is always matched by

Accepted Answer

A)  adenine, cytosine, and guanine (ACG). 
B)  guanine, adenine, and cytosine (GA
C) . 
C)  adenine, thymine, and guanine (ATG). 
D)  a five-carbon sugar and a phosphate. 
A)  adenine, cytosine, and guanine (ACG). 
B)  guanine, adenine, and cytosine (GA
C) . 
C)  adenine, thymine, and guanine (ATG). 
D)  a five-carbon sugar and a phosphate.

Question 7

For each genetic definition below, select the corresponding genetic term from the list provided.
-Set of signs or symptoms occurring together

Accepted Answer

A) Autosomes 
B) Gamete 
C) Locus 
D) Mutation 
E) Phenotype
F)Syndrome 
A) Autosomes 
B) Gamete 
C) Locus 
D) Mutation 
E) Phenotype
F)Syndrome

Question 8

Inactivation of the genetic activity of one of the X chromosomes in each cell of a female embryo during the early period of embryonic development is referred to as

Accepted Answer

A)  Barr body. 
B)  nucleotide. 
C)  karyotype. 
D)  the Lyon hypothesis. 
A)  Barr body. 
B)  nucleotide. 
C)  karyotype. 
D)  the Lyon hypothesis.

Question 9

Which statement is true concerning hemophilia A?

Accepted Answer

A)  It is inherited as an X-linked dominant condition. 
B)  It is inherited as a Y-linked recessive condition. 
C)  All X chromosomes are abnormal in the female carrier. 
D)  Female carriers tend to bleed more than usual after extraction of teeth or scaling and curettage. 
A)  It is inherited as an X-linked dominant condition. 
B)  It is inherited as a Y-linked recessive condition. 
C)  All X chromosomes are abnormal in the female carrier. 
D)  Female carriers tend to bleed more than usual after extraction of teeth or scaling and curettage.

Question 10

For each genetic definition below, select the corresponding genetic term from the list provided.
-Spermatozoon or ovum

Accepted Answer

A) Autosomes 
B) Gamete 
C) Locus 
D) Mutation 
E) Phenotype
F)Syndrome 
A) Autosomes 
B) Gamete 
C) Locus 
D) Mutation 
E) Phenotype
F)Syndrome

Question 11

Each statement is true regarding focal palmoplantar and gingival hyperkeratosis except one. Which one is the exception?

Accepted Answer

A)  Marked hyperkeratosis follows the normal contour of the gingiva. 
B)  The free gingiva is highly affected with hyperkeratosis. 
C)  Oral changes start in childhood and increase with age. 
D)  Oral hyperkeratinization is bandlike and a few millimeters in width. 
A)  Marked hyperkeratosis follows the normal contour of the gingiva. 
B)  The free gingiva is highly affected with hyperkeratosis. 
C)  Oral changes start in childhood and increase with age. 
D)  Oral hyperkeratinization is bandlike and a few millimeters in width.

Question 12

Which statement is correct concerning chromosomes?

Accepted Answer

A)  Chromosomes are located in the of the cell. 
B)  Mature germ cells (ova and spermatozoa) contain 46 chromosomes. 
C)  Chromosomes can only be seen clearly under a microscope when the nucleus and cell are dividing. 
D)  Chromosomes contain RNA, which directs the production of amino acids, polypeptides, and proteins by the cell. 
A)  Chromosomes are located in the of the cell. 
B)  Mature germ cells (ova and spermatozoa) contain 46 chromosomes. 
C)  Chromosomes can only be seen clearly under a microscope when the nucleus and cell are dividing. 
D)  Chromosomes contain RNA, which directs the production of amino acids, polypeptides, and proteins by the cell.

Question 13

Cherubism

Accepted Answer

A)  is inherited as an autosomal-dominant disease with marked penetrance in females and variable expressivity and incomplete penetrance in males. 
B)  most frequently involves the maxilla. 
C)  is characterized by a unilateral facial deformity. 
D)  reveals a typical "soap-bubble" or multilocular appearance on radiographic images. 
A)  is inherited as an autosomal-dominant disease with marked penetrance in females and variable expressivity and incomplete penetrance in males. 
B)  most frequently involves the maxilla. 
C)  is characterized by a unilateral facial deformity. 
D)  reveals a typical "soap-bubble" or multilocular appearance on radiographic images.

Question 14

A patient with unilateral or bilateral aplasia of the clavicles will have which characteristics?

Accepted Answer

A)  Hyperplastic paranasal sinuses 
B)  Short and wide neck 
C)  Mushroom shape of the cranium because of premature closure of the fontanelles 
D)  Be able to approximate their shoulders to the midline 
A)  Hyperplastic paranasal sinuses 
B)  Short and wide neck 
C)  Mushroom shape of the cranium because of premature closure of the fontanelles 
D)  Be able to approximate their shoulders to the midline

Question 15

For each genetic definition below, select the corresponding genetic term from the list provided.
-Permanent change in the arrangement of genetic material

Accepted Answer

A) Autosomes 
B) Gamete 
C) Locus 
D) Mutation 
E) Phenotype
F)Syndrome 
A) Autosomes 
B) Gamete 
C) Locus 
D) Mutation 
E) Phenotype
F)Syndrome

Question 16

A mother who is a carrier of an X-linked recessive trait has a 50% risk of giving birth to a(n)

Accepted Answer

A)  affected son or daughter. 
B)  carrier son or daughter. 
C)  affected son or a carrier daughter. 
D)  carrier son or an affected daughter. 
A)  affected son or daughter. 
B)  carrier son or daughter. 
C)  affected son or a carrier daughter. 
D)  carrier son or an affected daughter.

Question 17

Frontal bossing, depressed nasal bridge, protuberant lips, and almost complete lack of scalp hair are characteristic of a person with which condition?

Accepted Answer

A)  Hypophosphatemic vitamin D-resistant rickets 
B)  Hypophosphatasia 
C)  Hypohidrotic ectodermal dysplasia 
D)  Dentin dysplasia 
A)  Hypophosphatemic vitamin D-resistant rickets 
B)  Hypophosphatasia 
C)  Hypohidrotic ectodermal dysplasia 
D)  Dentin dysplasia

Question 18

Which statement is true regarding gross chromosomal abnormalities involving alterations in the number of human chromosomes?

Accepted Answer

A)  Aneuploidy is a complete second set of chromosomes, meaning a total of 46. 
B)  Polyploidy is any number of chromosomes that do not represent an exact multiple of the total chromosome complement. 
C)  Euploidy is a complete second set of chromosomes, meaning a total of 46. 
D)  Aneuploidy may be represented by trisomy and monosomy. 
A)  Aneuploidy is a complete second set of chromosomes, meaning a total of 46. 
B)  Polyploidy is any number of chromosomes that do not represent an exact multiple of the total chromosome complement. 
C)  Euploidy is a complete second set of chromosomes, meaning a total of 46. 
D)  Aneuploidy may be represented by trisomy and monosomy.

Question 19

For each clinical syndrome below, select the corresponding chromosomal abnormality from the list provided.
-Klinefelter

Accepted Answer

A) Characterized by multiple abnormalities in various organs 
B) Down syndrome as a result of nondisjunction 
C) Nondisjunction of the X chromosome in the paternal gamete 
D) Deletion on the short arm of chromosome 5 
E) Fertilized ovum has two X chromosomes plus a Y chromosome 
A) Characterized by multiple abnormalities in various organs 
B) Down syndrome as a result of nondisjunction 
C) Nondisjunction of the X chromosome in the paternal gamete 
D) Deletion on the short arm of chromosome 5 
E) Fertilized ovum has two X chromosomes plus a Y chromosome

Question 20

The _____ type of amelogenesis imperfecta is characterized by tooth enamel that does not develop to a normal thickness because of failure of the ameloblasts to lay down enamel matrix properly.

Accepted Answer

A)  hypoplastic 
B)  hypocalcified 
C)  hypomaturation 
D)  hypoplastic-hypomaturation 
A)  hypoplastic 
B)  hypocalcified 
C)  hypomaturation 
D)  hypoplastic-hypomaturation

Neurofibromatosis of von Recklinghausen is characterized by

__________ is characterized by very large, pyramid-shaped molars with large pulp chambers.

Which syndrome is characterized by intestinal polyps, which become malignant at age 30 and after?

Ribonucleic acid (RNA) contains uracil rather than the base _____ found in DNA.

Which statement is true regarding management of patients with cyclic neutropenia?

In DNA a sequence of thymine, adenine, and cytosine (TAC) is always matched by

For each genetic definition below, select the corresponding genetic term from the list provided. -Set of signs or symptoms occurring together

Inactivation of the genetic activity of one of the X chromosomes in each cell of a female embryo during the early period of embryonic development is referred to as

Which statement is true concerning hemophilia A?

For each genetic definition below, select the corresponding genetic term from the list provided. -Spermatozoon or ovum

Each statement is true regarding focal palmoplantar and gingival hyperkeratosis except one. Which one is the exception?

Which statement is correct concerning chromosomes?

Cherubism

A patient with unilateral or bilateral aplasia of the clavicles will have which characteristics?

For each genetic definition below, select the corresponding genetic term from the list provided. -Permanent change in the arrangement of genetic material

A mother who is a carrier of an X-linked recessive trait has a 50% risk of giving birth to a(n)

Frontal bossing, depressed nasal bridge, protuberant lips, and almost complete lack of scalp hair are characteristic of a person with which condition?

Which statement is true regarding gross chromosomal abnormalities involving alterations in the number of human chromosomes?

For each clinical syndrome below, select the corresponding chromosomal abnormality from the list provided. -Klinefelter

The _____ type of amelogenesis imperfecta is characterized by tooth enamel that does not develop to a normal thickness because of failure of the ameloblasts to lay down enamel matrix properly.

Introduction to Preliminary Diagnosis of Oral Lesions

Inflammation and Repair

Immunity and Immunologic Oral Lesions

Infectious Diseases

Developmental Disorders

Neoplasia

Nonneoplastic Diseases of Bone

Oral Manifestations of Systemic Diseases

Orofacial Pain and Diseases Affecting the Temporomandibular Joint

Filters

Exam 6: Genetics

Neurofibromatosis of von Recklinghausen is characterized by

__________ is characterized by very large, pyramid-shaped molars with large pulp chambers.

Which syndrome is characterized by intestinal polyps, which become malignant at age 30 and after?

Ribonucleic acid (RNA) contains uracil rather than the base _____ found in DNA.

Which statement is true regarding management of patients with cyclic neutropenia?

In DNA a sequence of thymine, adenine, and cytosine (TAC) is always matched by

For each genetic definition below, select the corresponding genetic term from the list provided. -Set of signs or symptoms occurring together

Inactivation of the genetic activity of one of the X chromosomes in each cell of a female embryo during the early period of embryonic development is referred to as

Which statement is true concerning hemophilia A?

For each genetic definition below, select the corresponding genetic term from the list provided. -Spermatozoon or ovum

Each statement is true regarding focal palmoplantar and gingival hyperkeratosis except one. Which one is the exception?

Which statement is correct concerning chromosomes?

Cherubism

A patient with unilateral or bilateral aplasia of the clavicles will have which characteristics?

For each genetic definition below, select the corresponding genetic term from the list provided. -Permanent change in the arrangement of genetic material

A mother who is a carrier of an X-linked recessive trait has a 50% risk of giving birth to a(n)

Frontal bossing, depressed nasal bridge, protuberant lips, and almost complete lack of scalp hair are characteristic of a person with which condition?

Which statement is true regarding gross chromosomal abnormalities involving alterations in the number of human chromosomes?

For each clinical syndrome below, select the corresponding chromosomal abnormality from the list provided. -Klinefelter

The _____ type of amelogenesis imperfecta is characterized by tooth enamel that does not develop to a normal thickness because of failure of the ameloblasts to lay down enamel matrix properly.

Introduction to Preliminary Diagnosis of Oral Lesions

Inflammation and Repair

Immunity and Immunologic Oral Lesions

Infectious Diseases

Developmental Disorders

Neoplasia

Nonneoplastic Diseases of Bone

Oral Manifestations of Systemic Diseases

Orofacial Pain and Diseases Affecting the Temporomandibular Joint

Filters