Question 1

Studies on aneuploidies of the sex chromosomes reveal that

Accepted Answer

A)  the X chromosome is not necessary for survival. 
B)  the Y chromosome is not necessary for survival. 
C)  two copies of the X chromosome are necessary for survival. 
D)  two copies of the Y chromosome are fatal. 
E)  none of these is true. 
A)  the X chromosome is not necessary for survival. 
B)  the Y chromosome is not necessary for survival. 
C)  two copies of the X chromosome are necessary for survival. 
D)  two copies of the Y chromosome are fatal. 
E)  none of these is true.

Question 2

The short arm of a submetacentric chromosome is symbolized as the ____________________ arm.

Accepted Answer

The answer of The short arm of a submetacentric chromosome...

Question 3

Describe the chromosomal constitution of the four cells of meiosis if a nondisjunction event occurred in Anaphase I.

Accepted Answer

In the event of a nondisjunction event o

Question 4

People with the chromosome constitution ____________________ were once considered more genetically predisposed to committing violent crime than those with a normal chromosome constitution.

Accepted Answer

The answer of People with the chromosome constitution ____________________ were...

Question 5

The letters G, Q, R, and C are used to describe bands that appear on chromosomes. The letters refer to

Accepted Answer

A)  the position of the bands. 
B)  the staining procedure used to reveal the bands. 
C)  the size of the bands. 
D)  the types of genes found within the bands. 
E)  the relative importance of the bands in karyotyping. 
A)  the position of the bands. 
B)  the staining procedure used to reveal the bands. 
C)  the size of the bands. 
D)  the types of genes found within the bands. 
E)  the relative importance of the bands in karyotyping.

Question 6

The region at the end of a chromosome is termed the _______.

Accepted Answer

A)  centromere 
B)  telomere 
C)  satellite 
D)  P arm 
E)  Q arm 
A)  centromere 
B)  telomere 
C)  satellite 
D)  P arm 
E)  Q arm

Question 7

The reason for the spontaneous abortion of almost all 45, X fetuses is unknown.

Accepted Answer

A) True 
 B)False

Question 8

Due to a chromosome deletion, Timothy is very retarded, both physically and mentally. He also has a severe abnormality of his voice-box so that his cry is abnormal. Give the karyotypic designation and the name of the syndrome that he most likely has. ____________________

Accepted Answer

46, XY, (d

Question 9

Characterize the frequency of changes in chromosome number in humans.

Accepted Answer

A)  Close to half of all conceptions are aneuploid. 
B)  They are a major cause of reproductive failure. 
C)  The frequency is significantly higher than it is in closely-related animals. 
D)  All of these. 
E)  None of these. 
A)  Close to half of all conceptions are aneuploid. 
B)  They are a major cause of reproductive failure. 
C)  The frequency is significantly higher than it is in closely-related animals. 
D)  All of these. 
E)  None of these.

Question 10

Which of the following is an enzyme used in G-banding?

Accepted Answer

A)  Quinacrine 
B)  Giemsa 
C)  Trypsin 
D)  Catalase 
E)  Peroxidase 
A)  Quinacrine 
B)  Giemsa 
C)  Trypsin 
D)  Catalase 
E)  Peroxidase

Question 11

If a mother already has a child with chromosomal abnormalities, the risk of having another child with chromosomal abnormalities is 10 percent.

Accepted Answer

A) True 
 B)False

Question 12

Distinguish between:
a. Trisomy 13 and trisomy 18
b. Triploidy and tetraploidy
c. Angelman syndrome and Prader-Willi syndrome

Accepted Answer

a. Trisomy 13 and trisomy 18:
Trisomy 13

Question 13

Show how the frequencies of many chromosome abnormalities are different in newborns than they are in fetuses.

Accepted Answer

The frequencies of chromosome abnormalit

Question 14

The most common survival trisomy is trisomy 13.

Accepted Answer

A) True 
 B)False

Question 15

Klinefelter syndrome patients who are mosaics have some cells with 46, XY and others with ____________________.

Accepted Answer

The answer of Klinefelter syndrome patients who are mosaics have...

Question 16

Most triploid zygotes arise from

Accepted Answer

A)  fertilization of a diploid egg by a normal haploid sperm. 
B)  fertilization of a normal haploid egg by a diploid sperm. 
C)  fertilization of a normal haploid egg by two sperm. 
D)  nondisjunction during the zygote's first mitotic division. 
E)  fusion of the zygote with an unfertilized egg. 
A)  fertilization of a diploid egg by a normal haploid sperm. 
B)  fertilization of a normal haploid egg by a diploid sperm. 
C)  fertilization of a normal haploid egg by two sperm. 
D)  nondisjunction during the zygote's first mitotic division. 
E)  fusion of the zygote with an unfertilized egg.

Question 17

How does polyploidy differ from aneuploidy?

Accepted Answer

A)  Polyploidy involves diploid chromosome sets, while aneuploidy involves haploid sets. 
B)  Polyploidy involves changes in entire chromosome sets; aneuploidy involves less than a diploid set of chromosomes. 
C)  Polyploidy involves monosomy; aneuploidy involves trisomy. 
D)  Polyploidy is produced by translocations; aneuploidy by nondisjunction. 
E)  None of these is a difference between polyploidy and aneuploidy. 
A)  Polyploidy involves diploid chromosome sets, while aneuploidy involves haploid sets. 
B)  Polyploidy involves changes in entire chromosome sets; aneuploidy involves less than a diploid set of chromosomes. 
C)  Polyploidy involves monosomy; aneuploidy involves trisomy. 
D)  Polyploidy is produced by translocations; aneuploidy by nondisjunction. 
E)  None of these is a difference between polyploidy and aneuploidy.

Question 18

What chromosomal mutation occurs in each of the following: Patau syndrome, Klinefelter syndrome, Turner syndrome, and Angelman syndrome?

Accepted Answer

Patau syndrome, Klinefelter syndrome, Tu

Question 19

Turner syndrome is associated with severe mental retardation.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is not information derived from karyotypes?

Accepted Answer

A)  The number of chromosomes in a genome. 
B)  The number and type of sex chromosomes. 
C)  The presence or absence of individual chromosomes. 
D)  Structural abnormalities. 
E)  The pattern of inheritance: recessive, dominant, etc. 
A)  The number of chromosomes in a genome. 
B)  The number and type of sex chromosomes. 
C)  The presence or absence of individual chromosomes. 
D)  Structural abnormalities. 
E)  The pattern of inheritance: recessive, dominant, etc.

Studies on aneuploidies of the sex chromosomes reveal that

The short arm of a submetacentric chromosome is symbolized as the ____________________ arm.

Describe the chromosomal constitution of the four cells of meiosis if a nondisjunction event occurred in Anaphase I.

People with the chromosome constitution ____________________ were once considered more genetically predisposed to committing violent crime than those with a normal chromosome constitution.

The letters G, Q, R, and C are used to describe bands that appear on chromosomes. The letters refer to

The region at the end of a chromosome is termed the _______.

The reason for the spontaneous abortion of almost all 45, X fetuses is unknown.

Due to a chromosome deletion, Timothy is very retarded, both physically and mentally. He also has a severe abnormality of his voice-box so that his cry is abnormal. Give the karyotypic designation and the name of the syndrome that he most likely has. ____________________

Characterize the frequency of changes in chromosome number in humans.

Which of the following is an enzyme used in G-banding?

If a mother already has a child with chromosomal abnormalities, the risk of having another child with chromosomal abnormalities is 10 percent.

Distinguish between: a. Trisomy 13 and trisomy 18 b. Triploidy and tetraploidy c. Angelman syndrome and Prader-Willi syndrome

Show how the frequencies of many chromosome abnormalities are different in newborns than they are in fetuses.

The most common survival trisomy is trisomy 13.

Klinefelter syndrome patients who are mosaics have some cells with 46, XY and others with ____________________.

Most triploid zygotes arise from

How does polyploidy differ from aneuploidy?

What chromosomal mutation occurs in each of the following: Patau syndrome, Klinefelter syndrome, Turner syndrome, and Angelman syndrome?

Turner syndrome is associated with severe mental retardation.

Which of the following is not information derived from karyotypes?

A Perspective on Human Genetics

Cells and Cell Division

Transmission of Genes From Generation to Generation

Pedigree Analysis in Human Genetics

Complex Patterns of Inheritance

Development and Sex Determination

DNA Structure and Chromosomal Organization

Gene Expression: From Genes to Proteins

From Proteins to Phenotypes

Mutation: the Source of Genetic Variation

Genes and Cancer

An Introduction to Genetic Technology

Biotechnology and Society

Genomes and Genomics

Reproductive Technology, Genetic Testing, and Gene Therapy

Genes and the Immune System

Genetics of Behavior

Population Genetics and Human Evolution

Filters

Exam 6: Cytogenetics: Karyotypes and Chromosome Aberrations

Studies on aneuploidies of the sex chromosomes reveal that

The short arm of a submetacentric chromosome is symbolized as the ____________________ arm.

Describe the chromosomal constitution of the four cells of meiosis if a nondisjunction event occurred in Anaphase I.

People with the chromosome constitution ____________________ were once considered more genetically predisposed to committing violent crime than those with a normal chromosome constitution.

The letters G, Q, R, and C are used to describe bands that appear on chromosomes. The letters refer to

The region at the end of a chromosome is termed the _______.

The reason for the spontaneous abortion of almost all 45, X fetuses is unknown.

Due to a chromosome deletion, Timothy is very retarded, both physically and mentally. He also has a severe abnormality of his voice-box so that his cry is abnormal. Give the karyotypic designation and the name of the syndrome that he most likely has. ____________________

Characterize the frequency of changes in chromosome number in humans.

Which of the following is an enzyme used in G-banding?

If a mother already has a child with chromosomal abnormalities, the risk of having another child with chromosomal abnormalities is 10 percent.

Distinguish between: a. Trisomy 13 and trisomy 18 b. Triploidy and tetraploidy c. Angelman syndrome and Prader-Willi syndrome

Show how the frequencies of many chromosome abnormalities are different in newborns than they are in fetuses.

The most common survival trisomy is trisomy 13.

Klinefelter syndrome patients who are mosaics have some cells with 46, XY and others with ____________________.

Most triploid zygotes arise from

How does polyploidy differ from aneuploidy?

What chromosomal mutation occurs in each of the following: Patau syndrome, Klinefelter syndrome, Turner syndrome, and Angelman syndrome?

Turner syndrome is associated with severe mental retardation.

Which of the following is not information derived from karyotypes?

A Perspective on Human Genetics

Cells and Cell Division

Transmission of Genes From Generation to Generation

Pedigree Analysis in Human Genetics

Complex Patterns of Inheritance

Development and Sex Determination

DNA Structure and Chromosomal Organization

Gene Expression: From Genes to Proteins

From Proteins to Phenotypes

Mutation: the Source of Genetic Variation

Genes and Cancer

An Introduction to Genetic Technology

Biotechnology and Society

Genomes and Genomics

Reproductive Technology, Genetic Testing, and Gene Therapy

Genes and the Immune System

Genetics of Behavior

Population Genetics and Human Evolution

Filters