Question 1

Which of the following statements applies to the sex chromosomes?

Accepted Answer

A)  They are identified as XY in the female. 
B)  They are numbered pair 23 in the karyotype. 
C)  They contain the same genes as in the other pairs of chromosomes. 
D)  They are found only in the cells in the gonads (the ovaries and the testes). 
A)  They are identified as XY in the female. 
B)  They are numbered pair 23 in the karyotype. 
C)  They contain the same genes as in the other pairs of chromosomes. 
D)  They are found only in the cells in the gonads (the ovaries and the testes).

Question 2

TORCH is an acronym for routine prenatal screening tests for high-risk maternal infections; TORCH stands for:

Accepted Answer

A)  toxoplasmosis, other (hepatitis B, mumps, rubeola, varicella, gonorrhea, syphilis), rubella, cytomegalovirus, and herpes. 
B)  tuberculosis, other (hepatitis B, mumps, rubeola, varicella, gonorrhea, syphilis), rabies, cytomegalovirus, and HIV. 
C)  toxoplasmosis, other (hepatitis B, mumps, rubeola, varicella, gonorrhea, syphilis), rabies, cytomegalovirus, and HIV. 
D)  tuberculosis, other (hepatitis B, mumps, rubeola, varicella, gonorrhea, syphilis), rabies, cytomegalovirus, and herpes. 
A)  toxoplasmosis, other (hepatitis B, mumps, rubeola, varicella, gonorrhea, syphilis), rubella, cytomegalovirus, and herpes. 
B)  tuberculosis, other (hepatitis B, mumps, rubeola, varicella, gonorrhea, syphilis), rabies, cytomegalovirus, and HIV. 
C)  toxoplasmosis, other (hepatitis B, mumps, rubeola, varicella, gonorrhea, syphilis), rabies, cytomegalovirus, and HIV. 
D)  tuberculosis, other (hepatitis B, mumps, rubeola, varicella, gonorrhea, syphilis), rabies, cytomegalovirus, and herpes.

Question 3

The purpose of the Human Genome Project was to:

Accepted Answer

A)  map the nucleotide sequence and identify the genes on each human chromosome. 
B)  study the common patterns of inheritance of single-gene disorders. 
C)  manipulate the sequence of DNA in microorganisms and animals. 
D)  identify spontaneous alterations in genetic material caused by teratogens. 
A)  map the nucleotide sequence and identify the genes on each human chromosome. 
B)  study the common patterns of inheritance of single-gene disorders. 
C)  manipulate the sequence of DNA in microorganisms and animals. 
D)  identify spontaneous alterations in genetic material caused by teratogens.

Question 4

Developmental disorders can result from all the following EXCEPT:

Accepted Answer

A)  exposure to radiation. 
B)  mercury in foods and water. 
C)  drugs and alcohol. 
D)  folic acid. 
A)  exposure to radiation. 
B)  mercury in foods and water. 
C)  drugs and alcohol. 
D)  folic acid.

Question 5

Exposure to cocaine during pregnancy leads to increased risk of:

Accepted Answer

A)  premature birth. 
B)  respiratory problems. 
C)  sudden infant death syndrome. 
D)  A, B, and C 
A)  premature birth. 
B)  respiratory problems. 
C)  sudden infant death syndrome. 
D)  A, B, and C

Question 6

Agents that cause damage during embryonic or fetal development are called:

Accepted Answer

A)  teratogenic. 
B)  mutagenic. 
C)  multifactorial agents. 
D)  polygenic agents. 
A)  teratogenic. 
B)  mutagenic. 
C)  multifactorial agents. 
D)  polygenic agents.

Question 7

A mother is a carrier of Duchenne muscular dystrophy; the father is unaffected. They have one son with muscular dystrophy. Another male child is expected. The probability of the second son having muscular dystrophy is:

Accepted Answer

A)  100% 
B)  50% 
C)  25% 
D)  0% 
A)  100% 
B)  50% 
C)  25% 
D)  0%

Question 8

Genes located at the same site on a pair of homologous chromosomes that are also matched for function are called:

Accepted Answer

A)  alleles. 
B)  genotypes. 
C)  autosomes. 
D)  phenotypes. 
A)  alleles. 
B)  genotypes. 
C)  autosomes. 
D)  phenotypes.

Question 9

Which of the following statements applies to Huntington's disease?

Accepted Answer

A)  The effects are obvious at birth. 
B)  There is a test for the defective gene. 
C)  There is a 50% probability that the child of an affected parent will be a carrier. 
D)  The child must inherit the defective gene from both parents in order to be affected. 
A)  The effects are obvious at birth. 
B)  There is a test for the defective gene. 
C)  There is a 50% probability that the child of an affected parent will be a carrier. 
D)  The child must inherit the defective gene from both parents in order to be affected.

Question 10

When genetic influences combine with environmental factors to cause an abnormality, the result is called a:

Accepted Answer

A)  chromosomal disorder. 
B)  developmental disorder. 
C)  multifactorial disorder. 
D)  single-gene disorder. 
A)  chromosomal disorder. 
B)  developmental disorder. 
C)  multifactorial disorder. 
D)  single-gene disorder.

Question 11

A spontaneous alteration in genetic material that may result from exposure to harmful substances is termed:

Accepted Answer

A)  autosome. 
B)  genotype. 
C)  meiosis. 
D)  mutation. 
A)  autosome. 
B)  genotype. 
C)  meiosis. 
D)  mutation.

Question 12

What is the probability of two parents, both carriers of a defective recessive gene, producing a homozygous child (with each pregnancy)?

Accepted Answer

A)  0% 
B)  25% 
C)  50% 
D)  75% 
A)  0% 
B)  25% 
C)  50% 
D)  75%

Which of the following statements applies to the sex chromosomes?

TORCH is an acronym for routine prenatal screening tests for high-risk maternal infections; TORCH stands for:

The purpose of the Human Genome Project was to:

Developmental disorders can result from all the following EXCEPT:

Exposure to cocaine during pregnancy leads to increased risk of:

Agents that cause damage during embryonic or fetal development are called:

A mother is a carrier of Duchenne muscular dystrophy; the father is unaffected. They have one son with muscular dystrophy. Another male child is expected. The probability of the second son having muscular dystrophy is:

Genes located at the same site on a pair of homologous chromosomes that are also matched for function are called:

Which of the following statements applies to Huntington's disease?

When genetic influences combine with environmental factors to cause an abnormality, the result is called a:

A spontaneous alteration in genetic material that may result from exposure to harmful substances is termed:

What is the probability of two parents, both carriers of a defective recessive gene, producing a homozygous child (with each pregnancy)?

Introduction to Pathophysiology

Fluid, Electrolyte, and Acid-Base Imbalances

Introduction to Basic Pharmacology and Other Common Therapies

Pain

Inflammation and Healing

Infection

Immunity

Skin Disorders

Musculoskeletal Disorders

Blood and Circulatory System Disorders

Lymphatic System Disorders

Cardiovascular System Disorders

Respiratory System Disorders

Neurological Disorders

Disorders of the Eye, Ear, and Other Sensory Organs

Endocrine System Disorders

Digestive System Disorders

Urinary System Disorders

Reproductive System Disorders

Neoplasms and Cancer

Complications Due to Pregnancy

Complications Due to Adolescence

Complications Due to Aging

Immobility and Associated Problems

Stress and Associated Problems

Substance Abuse and Associated Problems

Environmental Hazards and Associated Problems

Filters

Exam 21: Congenital and Genetic Disorders

Which of the following statements applies to the sex chromosomes?

TORCH is an acronym for routine prenatal screening tests for high-risk maternal infections; TORCH stands for:

The purpose of the Human Genome Project was to:

Developmental disorders can result from all the following EXCEPT:

Exposure to cocaine during pregnancy leads to increased risk of:

Agents that cause damage during embryonic or fetal development are called:

A mother is a carrier of Duchenne muscular dystrophy; the father is unaffected. They have one son with muscular dystrophy. Another male child is expected. The probability of the second son having muscular dystrophy is:

Genes located at the same site on a pair of homologous chromosomes that are also matched for function are called:

Which of the following statements applies to Huntington's disease?

When genetic influences combine with environmental factors to cause an abnormality, the result is called a:

A spontaneous alteration in genetic material that may result from exposure to harmful substances is termed:

What is the probability of two parents, both carriers of a defective recessive gene, producing a homozygous child (with each pregnancy)?

Introduction to Pathophysiology

Fluid, Electrolyte, and Acid-Base Imbalances

Introduction to Basic Pharmacology and Other Common Therapies

Pain

Inflammation and Healing

Infection

Immunity

Skin Disorders

Musculoskeletal Disorders

Blood and Circulatory System Disorders

Lymphatic System Disorders

Cardiovascular System Disorders

Respiratory System Disorders

Neurological Disorders

Disorders of the Eye, Ear, and Other Sensory Organs

Endocrine System Disorders

Digestive System Disorders

Urinary System Disorders

Reproductive System Disorders

Neoplasms and Cancer

Complications Due to Pregnancy

Complications Due to Adolescence

Complications Due to Aging

Immobility and Associated Problems

Stress and Associated Problems

Substance Abuse and Associated Problems

Environmental Hazards and Associated Problems

Filters