Question 1

-The location of this can vary depending on the chromosome.

Accepted Answer

The answer of  
-The location of this can vary...

Question 2

This test requires growing the isolated cells for about a week and can indicate prenatal chromosomal abnormalities.

Accepted Answer

A)  amniocentesis 
B)  chorionic villus sampling (CVS) 
C)  pregnancy testing that detects hormone levels 
D)  analysis of free fetal DNA. 
E)  analysis of the father's DNA. 
A)  amniocentesis 
B)  chorionic villus sampling (CVS) 
C)  pregnancy testing that detects hormone levels 
D)  analysis of free fetal DNA. 
E)  analysis of the father's DNA.

Question 3

The end result of meiosis is

Accepted Answer

A)  four haploid cells. 
B)  two diploid cells. 
C)  two haploid cells and two diploid cells. 
D)  four diploid cells. 
E)  two haploid cells. 
A)  four haploid cells. 
B)  two diploid cells. 
C)  two haploid cells and two diploid cells. 
D)  four diploid cells. 
E)  two haploid cells.

Question 4

A karyotype

Accepted Answer

A)  will change during the course of an individual's lifetime. 
B)  does not provide any information on the sex of a fetus. 
C)  is a microscope slide containing a spread of chromosomes from a single cell. 
D)  shows the chromosomes from the mother separated from those from the father. 
E)  can be used to determine whether an individual is aneuploid or not. 
A)  will change during the course of an individual's lifetime. 
B)  does not provide any information on the sex of a fetus. 
C)  is a microscope slide containing a spread of chromosomes from a single cell. 
D)  shows the chromosomes from the mother separated from those from the father. 
E)  can be used to determine whether an individual is aneuploid or not.

Question 5

To produce an individual with Jacobs syndrome (47,XYY),

Accepted Answer

A)  a nondisjunction event must have occurred during spermatogenesis. 
B)  more than one sperm must have been involved in fertilization. 
C)  a nondisjunction event must have occurred during oogenesis. 
D)  this must have been caused by uniparental disomy. 
E)  a nondisjunction event could have occurred during spermatogenesis or oogenesis. 
A)  a nondisjunction event must have occurred during spermatogenesis. 
B)  more than one sperm must have been involved in fertilization. 
C)  a nondisjunction event must have occurred during oogenesis. 
D)  this must have been caused by uniparental disomy. 
E)  a nondisjunction event could have occurred during spermatogenesis or oogenesis.

Question 6

The most common cause of both trisomy and monosomy is

Accepted Answer

A)  exposure to radiation. 
B)  carcinogenic agents. 
C)  smoking. 
D)  nondisjunction. 
E)  None of these are the most common cause of trisomy and monosomy. 
A)  exposure to radiation. 
B)  carcinogenic agents. 
C)  smoking. 
D)  nondisjunction. 
E)  None of these are the most common cause of trisomy and monosomy.

Question 7

If a normal diploid cell from a certain animal species contains 36 chromosomes,an oocyte from a female of this species contains ____ chromosomes.

Accepted Answer

A)  9 
B)  12 
C)  18 
D)  36 
E)  72 
A)  9 
B)  12 
C)  18 
D)  36 
E)  72

Question 8

Individuals with Jacobs syndrome are

Accepted Answer

A)  47, XYY. 
B)  45, X. 
C)  47, XXY. 
D)  47, +13 
E)  47, +21 
A)  47, XYY. 
B)  45, X. 
C)  47, XXY. 
D)  47, +13 
E)  47, +21

Question 9

MATCHING
Match the correct syndromes with the genetic abnormality.
-Down syndrome

Accepted Answer

A) Trisomy 21 
B) XXY 
C) XO 
D) 47, +13 
E) Trisomy 18
F)47, XYY 
A) Trisomy 21 
B) XXY 
C) XO 
D) 47, +13 
E) Trisomy 18
F)47, XYY

Question 10

-Sister chromatids.

Accepted Answer

The answer of  
-Sister chromatids....

Question 11

MATCHING
Match the correct syndromes with the genetic abnormality.
-Turner syndrome

Accepted Answer

A) Trisomy 21 
B) XXY 
C) XO 
D) 47, +13 
E) Trisomy 18
F)47, XYY 
A) Trisomy 21 
B) XXY 
C) XO 
D) 47, +13 
E) Trisomy 18
F)47, XYY

Question 12

What is the advantage of performing CVS over amniocentesis?

Accepted Answer

A)  CVS can be done earlier in the pregnancy. 
B)  With CVS, there is no risk of miscarriage. 
C)  CVS allows chromosomal analysis; amniocentesis does not. 
D)  There is no advantage to performing CVS over amniocentesis. 
E)  CVS can be performed on the father; amniocentesis must be performed on the mother. 
A)  CVS can be done earlier in the pregnancy. 
B)  With CVS, there is no risk of miscarriage. 
C)  CVS allows chromosomal analysis; amniocentesis does not. 
D)  There is no advantage to performing CVS over amniocentesis. 
E)  CVS can be performed on the father; amniocentesis must be performed on the mother.

Question 13

Polar bodies form

Accepted Answer

A)  only if fertilization occurs. 
B)  due to unequal cytoplasmic division during oogenesis. 
C)  only when a nondisjunction event has occurred. 
D)  due to unequal cytoplasmic division during spermatogenesis. 
E)  after a woman has reached menopause. 
A)  only if fertilization occurs. 
B)  due to unequal cytoplasmic division during oogenesis. 
C)  only when a nondisjunction event has occurred. 
D)  due to unequal cytoplasmic division during spermatogenesis. 
E)  after a woman has reached menopause.

Question 14

What is the purpose of genetic counseling? What kinds of information must a genetic counselor take into account in order to assess patient risk for genetic disorders?

Accepted Answer

Genetic counselors identify families at

Question 15

To produce an individual with Turner syndrome (45,X),

Accepted Answer

A)  a nondisjunction event must have occurred during spermatogenesis. 
B)  more than one sperm must have been involved in fertilization. 
C)  a nondisjunction event must have occurred during oogenesis. 
D)  this must have been caused by uniparental disomy. 
E)  a nondisjunction event could have occurred during spermatogenesis or oogenesis. 
A)  a nondisjunction event must have occurred during spermatogenesis. 
B)  more than one sperm must have been involved in fertilization. 
C)  a nondisjunction event must have occurred during oogenesis. 
D)  this must have been caused by uniparental disomy. 
E)  a nondisjunction event could have occurred during spermatogenesis or oogenesis.

Question 16

To produce an individual with Kleinfelter syndrome (47,XXY),

Accepted Answer

A)  a nondisjunction event must have occurred during spermatogenesis. 
B)  more than one sperm must have been involved in fertilization. 
C)  a nondisjunction event must have occurred during oogenesis. 
D)  this must have been caused by uniparental disomy. 
E)  a nondisjunction event could have occurred during spermatogenesis or oogenesis. 
A)  a nondisjunction event must have occurred during spermatogenesis. 
B)  more than one sperm must have been involved in fertilization. 
C)  a nondisjunction event must have occurred during oogenesis. 
D)  this must have been caused by uniparental disomy. 
E)  a nondisjunction event could have occurred during spermatogenesis or oogenesis.

Question 17

Uniparental disomy

Accepted Answer

A)  describes a condition in which an individual has an abnormal number of chromosomes. 
B)  never causes any genetic problems. 
C)  has been determined to be involved in Angelman syndrome. 
D)  can be the cause of Turner syndrome. 
E)  can lead to autosomal monosomy. 
A)  describes a condition in which an individual has an abnormal number of chromosomes. 
B)  never causes any genetic problems. 
C)  has been determined to be involved in Angelman syndrome. 
D)  can be the cause of Turner syndrome. 
E)  can lead to autosomal monosomy.

Question 18

Maternal age is the only known risk factor for aneuploidy.What are possible reasons for the increased risk associated with increase maternal age?

Accepted Answer

Although no one knows for certain why th

Question 19

Meiosis in females

Accepted Answer

A)  leads to the production of sperm. 
B)  only produces polar bodies. 
C)  has already completed by the time of her birth. 
D)  only completes if an oocyte is fertilized. 
E)  never completes. 
A)  leads to the production of sperm. 
B)  only produces polar bodies. 
C)  has already completed by the time of her birth. 
D)  only completes if an oocyte is fertilized. 
E)  never completes.

Question 20

Nondisjunction refers to

Accepted Answer

A)  the failure of cells to separate properly during mitosis. 
B)  the failure of chromosomes to separate properly during meiosis. 
C)  a chromosomal mutation. 
D)  the failure of chromosomes to replicate. 
E)  the inability to produce sperm. 
A)  the failure of cells to separate properly during mitosis. 
B)  the failure of chromosomes to separate properly during meiosis. 
C)  a chromosomal mutation. 
D)  the failure of chromosomes to replicate. 
E)  the inability to produce sperm.

-The location of this can vary depending on the chromosome.

This test requires growing the isolated cells for about a week and can indicate prenatal chromosomal abnormalities.

The end result of meiosis is

A karyotype

To produce an individual with Jacobs syndrome (47,XYY),

The most common cause of both trisomy and monosomy is

If a normal diploid cell from a certain animal species contains 36 chromosomes,an oocyte from a female of this species contains ____ chromosomes.

Individuals with Jacobs syndrome are

MATCHING Match the correct syndromes with the genetic abnormality. -Down syndrome

-Sister chromatids.

MATCHING Match the correct syndromes with the genetic abnormality. -Turner syndrome

What is the advantage of performing CVS over amniocentesis?

Polar bodies form

What is the purpose of genetic counseling? What kinds of information must a genetic counselor take into account in order to assess patient risk for genetic disorders?

To produce an individual with Turner syndrome (45,X),

To produce an individual with Kleinfelter syndrome (47,XXY),

Uniparental disomy

Maternal age is the only known risk factor for aneuploidy.What are possible reasons for the increased risk associated with increase maternal age?

Meiosis in females

Nondisjunction refers to

Sex and Development

Assisted Reproductive Technology

How Genes Are Transmitted From Generation to Generation

Gene Expression and Gene Regulation

Changes in DNA: Mutations and Epigenetics

Biotechnology

Genetic Testing and Prenatal Diagnosis

DNA Forensics

Genomics

Inheritance of Complex Traits

Cancer and the Cell Cycle

Behavior

Immunogenetics

Genetics and Populations

Human Evolution

A Different World: The Past, Present, and Future of Human Genetics

Biology Basics 1-Cells and Cell Structure

Biology Basics 2-DNA and RNA

Biology Basics 3-Genes, Populations, and the Environment

Filters

Exam 3: Changes in Chromosome Number

-The location of this can vary depending on the chromosome.

This test requires growing the isolated cells for about a week and can indicate prenatal chromosomal abnormalities.

The end result of meiosis is

A karyotype

To produce an individual with Jacobs syndrome (47,XYY),

The most common cause of both trisomy and monosomy is

If a normal diploid cell from a certain animal species contains 36 chromosomes,an oocyte from a female of this species contains ____ chromosomes.

Individuals with Jacobs syndrome are

MATCHING Match the correct syndromes with the genetic abnormality. -Down syndrome

-Sister chromatids.

MATCHING Match the correct syndromes with the genetic abnormality. -Turner syndrome

What is the advantage of performing CVS over amniocentesis?

Polar bodies form

What is the purpose of genetic counseling? What kinds of information must a genetic counselor take into account in order to assess patient risk for genetic disorders?

To produce an individual with Turner syndrome (45,X),

To produce an individual with Kleinfelter syndrome (47,XXY),

Uniparental disomy

Maternal age is the only known risk factor for aneuploidy.What are possible reasons for the increased risk associated with increase maternal age?

Meiosis in females

Nondisjunction refers to

Sex and Development

Assisted Reproductive Technology

How Genes Are Transmitted From Generation to Generation

Gene Expression and Gene Regulation

Changes in DNA: Mutations and Epigenetics

Biotechnology

Genetic Testing and Prenatal Diagnosis

DNA Forensics

Genomics

Inheritance of Complex Traits

Cancer and the Cell Cycle

Behavior

Immunogenetics

Genetics and Populations

Human Evolution

A Different World: The Past, Present, and Future of Human Genetics

Biology Basics 1-Cells and Cell Structure

Biology Basics 2-DNA and RNA

Biology Basics 3-Genes, Populations, and the Environment

Filters