Question 1

Genes that are located at the same level in homologous chromosomes and that dictate the same functions or characteristics are termed

Accepted Answer

A)  consanguineous. 
B)  chromatids. 
C)  alleles. 
D)  precocious. 
A)  consanguineous. 
B)  chromatids. 
C)  alleles. 
D)  precocious.

Question 2

Features of second meiosis include

Accepted Answer

A)  a replication of DNA before initiation. 
B)  essentially a mitotic division in which each chromosome splits longitudinally. 
C)  formation of four cells from the parent cell. 
D)  the formation of 2n DNA. 
A)  a replication of DNA before initiation. 
B)  essentially a mitotic division in which each chromosome splits longitudinally. 
C)  formation of four cells from the parent cell. 
D)  the formation of 2n DNA.

Question 3

Hard, dense, cortical bone on the buccal aspect of the alveolar ridge near the maxillary first molar would be termed a

Accepted Answer

A)  radiolucent torus palatinus. 
B)  radiopaque torus mandibularis. 
C)  maxillary exotosis. 
D)  radiolucent exostosis. 
A)  radiolucent torus palatinus. 
B)  radiopaque torus mandibularis. 
C)  maxillary exotosis. 
D)  radiolucent exostosis.

Question 4

__________ is an inherited disorder affecting the gingiva and periodontium, which is characterized by hyperkeratosis of the palms of the hands and soles of the feet.

Accepted Answer

A)  Cyclic neutropenia 
B)  Papillon-Lefèvre syndrome 
C)  Gingival fibromatosis 
D)  Laband syndrome 
A)  Cyclic neutropenia 
B)  Papillon-Lefèvre syndrome 
C)  Gingival fibromatosis 
D)  Laband syndrome

Question 5

The constriction present in all chromosomes that joins the short and long arms is termed

Accepted Answer

A)  trisomy. 
B)  nondisjunction. 
C)  centromere. 
D)  translocation. 
A)  trisomy. 
B)  nondisjunction. 
C)  centromere. 
D)  translocation.

Question 6

A patient with Papillon-Lefèvre syndrome will show a marked gingivoperiodontal inflammatory condition in the primary teeth at about _____ years of age.

Accepted Answer

A)  0 to 0.5 
B)  1.5 to 2 
C)  4 to 6 
D)  8 to 9 
A)  0 to 0.5 
B)  1.5 to 2 
C)  4 to 6 
D)  8 to 9

Question 7

For each genetic definition below, select the corresponding genetic term from the list provided.
-Nonsex chromosomes that are identical for men and women

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

Points of contact between the chromatid of one chromosome and the chromatid of the other chromosome of a pair, where crossing over and exchange of chromosome segments occur are termed

Accepted Answer

A)  first meiosis. 
B)  second meiosis. 
C)  chiasmata. 
D)  interpolation. 
A)  first meiosis. 
B)  second meiosis. 
C)  chiasmata. 
D)  interpolation.

Question 9

The majority of patients with Turner syndrome have a _____ phenotype and _____ chromosomes.

Accepted Answer

A)  male; 47 
B)  female; 46 
C)  female; 45 
D)  male; 44 
A)  male; 47 
B)  female; 46 
C)  female; 45 
D)  male; 44

Question 10

Most cases of Down syndrome are associated with

Accepted Answer

A)  maternal consumption of alcohol. 
B)  late maternal age at the time of conception. 
C)  estrogen supplements. 
D)  inhalation of vapors from volatile substances. 
A)  maternal consumption of alcohol. 
B)  late maternal age at the time of conception. 
C)  estrogen supplements. 
D)  inhalation of vapors from volatile substances.

Question 11

Where is the most common intraoral site for the development of neurofibromas in a patient with von Recklinghausen disease?

Accepted Answer

A)  Floor of the mouth 
B)  Labial commissures 
C)  Palate 
D)  Lateral borders of the tongue 
A)  Floor of the mouth 
B)  Labial commissures 
C)  Palate 
D)  Lateral borders of the tongue

Question 12

Each statement about chromosomes is true except one. Which one is the exception?

Accepted Answer

A)  Chromosomes are located in the nucleus of the cell. 
B)  Hereditary units called genes are found on 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 nucleus of the cell. 
B)  Hereditary units called genes are found on 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

Self-replication, or the ability to duplicate itself, is achievable by

Accepted Answer

A)  DNA. 
B)  amino acids. 
C)  meiosis. 
D)  genetic heterogeneity. 
A)  DNA. 
B)  amino acids. 
C)  meiosis. 
D)  genetic heterogeneity.

Question 14

For each genetic definition below, select the corresponding genetic term from the list provided.
-The observable appearance of an individual

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 15

Genetic risk is a mathematical estimate of probability governed by chance. A condition having autosomal-dominant inheritance is transmitted vertically from one generation to the next with males affected more than females.

Accepted Answer

A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true; the second is false. 
D)  The first statement is false; the second is true. 
A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true; the second is false. 
D)  The first statement is false; the second is true.

Question 16

Which disorder affecting the jaw bones and facies is characterized by fusion of the anterior portion of the maxillary gingiva to the upper lip from canine to canine?

Accepted Answer

A)  Gardner syndrome 
B)  Mandibulofacial dysostosis 
C)  Ellis-van Creveld syndrome 
D)  Cherubism 
A)  Gardner syndrome 
B)  Mandibulofacial dysostosis 
C)  Ellis-van Creveld syndrome 
D)  Cherubism

Question 17

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

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 18

The gap 1, S, and gap 2 phases are part of what type of cell division?

Accepted Answer

A)  First meiosis 
B)  Second meiosis 
C)  Mitosis 
D)  Hypohidrosis 
A)  First meiosis 
B)  Second meiosis 
C)  Mitosis 
D)  Hypohidrosis

Question 19

Chromosomes line up at the equatorial plate during the _____ stage of mitosis.

Accepted Answer

A)  telophase 
B)  metaphase 
C)  prophase 
D)  anaphase 
A)  telophase 
B)  metaphase 
C)  prophase 
D)  anaphase

Question 20

For autosomal-dominant inheritance, _____ pertains to the degree to which an individual is affected.

Accepted Answer

A)  penetrance 
B)  expressivity 
C)  heterogeneity 
D)  consanguinity 
A)  penetrance 
B)  expressivity 
C)  heterogeneity 
D)  consanguinity

Genes that are located at the same level in homologous chromosomes and that dictate the same functions or characteristics are termed

Features of second meiosis include

Hard, dense, cortical bone on the buccal aspect of the alveolar ridge near the maxillary first molar would be termed a

__________ is an inherited disorder affecting the gingiva and periodontium, which is characterized by hyperkeratosis of the palms of the hands and soles of the feet.

The constriction present in all chromosomes that joins the short and long arms is termed

A patient with Papillon-Lefèvre syndrome will show a marked gingivoperiodontal inflammatory condition in the primary teeth at about _____ years of age.

For each genetic definition below, select the corresponding genetic term from the list provided. -Nonsex chromosomes that are identical for men and women

Points of contact between the chromatid of one chromosome and the chromatid of the other chromosome of a pair, where crossing over and exchange of chromosome segments occur are termed

The majority of patients with Turner syndrome have a _ phenotype and _ chromosomes.

Most cases of Down syndrome are associated with

Where is the most common intraoral site for the development of neurofibromas in a patient with von Recklinghausen disease?

Each statement about chromosomes is true except one. Which one is the exception?

Self-replication, or the ability to duplicate itself, is achievable by

For each genetic definition below, select the corresponding genetic term from the list provided. -The observable appearance of an individual

Genetic risk is a mathematical estimate of probability governed by chance. A condition having autosomal-dominant inheritance is transmitted vertically from one generation to the next with males affected more than females.

Which disorder affecting the jaw bones and facies is characterized by fusion of the anterior portion of the maxillary gingiva to the upper lip from canine to canine?

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

The gap 1, S, and gap 2 phases are part of what type of cell division?

Chromosomes line up at the equatorial plate during the _____ stage of mitosis.

For autosomal-dominant inheritance, _____ pertains to the degree to which an individual is affected.

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

Genes that are located at the same level in homologous chromosomes and that dictate the same functions or characteristics are termed

Features of second meiosis include

Hard, dense, cortical bone on the buccal aspect of the alveolar ridge near the maxillary first molar would be termed a

__________ is an inherited disorder affecting the gingiva and periodontium, which is characterized by hyperkeratosis of the palms of the hands and soles of the feet.

The constriction present in all chromosomes that joins the short and long arms is termed

A patient with Papillon-Lefèvre syndrome will show a marked gingivoperiodontal inflammatory condition in the primary teeth at about _____ years of age.

For each genetic definition below, select the corresponding genetic term from the list provided. -Nonsex chromosomes that are identical for men and women

Points of contact between the chromatid of one chromosome and the chromatid of the other chromosome of a pair, where crossing over and exchange of chromosome segments occur are termed

The majority of patients with Turner syndrome have a _____ phenotype and _____ chromosomes.

Most cases of Down syndrome are associated with

Where is the most common intraoral site for the development of neurofibromas in a patient with von Recklinghausen disease?

Each statement about chromosomes is true except one. Which one is the exception?

Self-replication, or the ability to duplicate itself, is achievable by

For each genetic definition below, select the corresponding genetic term from the list provided. -The observable appearance of an individual

Genetic risk is a mathematical estimate of probability governed by chance. A condition having autosomal-dominant inheritance is transmitted vertically from one generation to the next with males affected more than females.

Which disorder affecting the jaw bones and facies is characterized by fusion of the anterior portion of the maxillary gingiva to the upper lip from canine to canine?

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

The gap 1, S, and gap 2 phases are part of what type of cell division?

Chromosomes line up at the equatorial plate during the _____ stage of mitosis.

For autosomal-dominant inheritance, _____ pertains to the degree to which an individual is affected.

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

The majority of patients with Turner syndrome have a _ phenotype and _ chromosomes.