Question 1

Autism is likely to have an environmental basis rather than a genetic basis and shows greater concordance between dizygotic twins than between monozygotic twins.

Accepted Answer

A) True 
 B)False

Question 2

The clinical service that advises prospective parents of their probable risk of having children with hereditary defects is known as

Accepted Answer

A)   genetic imprinting.
B)   teratogenesis.
C)   genetic coding.
D)   genetic counseling.

Question 3

In the context of the genetic code, the fundamental unit of heredity is a chemical called

Accepted Answer

A)   threonine.
B)   adenosine monophosphate.
C)   arachidonic acid.
D)   deoxyribonucleic acid.

Question 4

Obesity is measured by body mass index (BMI).

Accepted Answer

A) True 
 B)False  True

Question 5

Which of the following statements is true about phenylketonuria?

Accepted Answer

A)   It is best treated with the help of enzymes used to improve digestion.
B)   It is most likely to be found in families of Mediterranean descent.
C)   It is a metabolic disorder that results in intellectual disability.
D)   It is an enzyme deficiency that is likely to lead to cirrhosis of the liver in early infancy.

Question 6

Which of the following statements is true about adoption?

Accepted Answer

A)   In June 2017, the U.S. Supreme Court ruled that same-sex couples were to be treated as equal under the law, and same-sex adoption is now legal in all 50 states.
B)   In 2008, adoptions were unlikely to occur through publicly funded adoption agencies or through intercountry adoption.
C)   In August 2011, the U.S. Supreme Court ruled that stepparents could adopt the child of a spouse even if the spouse did not have legal custody of the child.
D)   Since the mid-1970s, the percentage of never-married women who adopt out their children has increased significantly.

Question 7

Which of the following statements about obesity is true?

Accepted Answer

A)   Studies indicate that 40 to 70 percent of the risk of obesity is genetic.
B)   Studies are yet to ascertain if there is a specific genetic code for obesity.
C)   Obesity is on the rise in Western countries solely because of a genetic vulnerability to obesity.
D)   The risk of obesity is free of environmental risk factors.

Question 8

The simplest form of assisted reproductive technology (ART)  is ________, and it can facilitate conception if a man has a low sperm count.

Accepted Answer

A)   ovum transfer
B)   gamete intrafallopian transfer
C)   artificial insemination
D)   in vitro fertilization C

Question 9

Which of the following is true of temperament?

Accepted Answer

A)   It is closely related to the age of parents during conception.
B)   It lacks a genetic basis.
C)   It appears to be largely inborn.
D)   It is inconsistent over the years.

Question 10

Incomplete dominance is a pattern of inheritance in which

Accepted Answer

A)   multiple genes at different sites on chromosomes affect a complex trait.
B)   a child receives identical recessive alleles, resulting in expression of a nondominant trait.
C)   a child receives two different alleles, resulting in partial expression of a trait.
D)   a child receives different alleles but only the dominant one is expressed.

Question 11

Which of the following statements is true about fertilization?

Accepted Answer

A)   At birth, a female is likely to have about 2 million immature ova in her two ovaries.
B)   Fertilization typically occurs before the ovum reaches the fallopian tube.
C)   Fertilization typically involves only one sperm being released into the vagina.
D)   At birth, a male is likely to have about a several hundred million sperm cells.

Question 12

Many studies suggest that schizophrenia

Accepted Answer

A)   is characterized by a strong hereditary influence.
B)   is seldom seen in family clusters.
C)   is solely a result of environmental stress.
D)   is caused by a single gene.

Question 13

If fertilization does not occur, the ovum and any sperm cells in the woman's body die.

Accepted Answer

A) True 
 B)False

Question 14

Permanent alterations in genes or chromosomes that usually produce harmful characteristics but provide the raw material of evolution are called mutations.

Accepted Answer

A) True 
 B)False

Question 15

In the context of birth defects, which of the following is true of sickle-cell anemia?

Accepted Answer

A)   It is a metabolic disorder resulting in mental retardation.
B)   It increases the susceptibility of at-risk individuals to pneumonia and stroke.
C)   Families of Mediterranean descent are primarily at risk for sickle-cell anemia.
D)   Treatment for sickle-cell anemia involves regular blood transfusions with clotting factors.

Question 16

Which of the following statements is true about Klinefelter syndrome?

Accepted Answer

A)   It results in a webbed neck, low-set ears, and short stature.
B)   It is caused by an extra female sex chromosome.
C)   It results from a missing sex chromosome.
D)   It is found only in females.

Question 17

Meiosis is a type of cell division in which

Accepted Answer

A)   nonsex cells divide and replicate DNA.
B)   permanent alterations are made in genetic material.
C)   sex cells end up with 23 chromosomes.
D)   recessive disorders are passed on to female children. C

Question 18

Beta thalassemia is a birth defect that

Accepted Answer

A)   causes severe anemia, leading to weakness, fatigue, and frequent illness.
B)   leads to respiratory failure.
C)   leads to the overproduction of mucus, which collects in the lungs and digestive tract.
D)   causes poor blood clotting.

Question 19

________ are chromosomes that are not related to sexual expression.

Accepted Answer

A)   Allosomes
B)   Ribosomes
C)   Lysosomes
D)   Autosomes

Question 20

Which of the following is true about canalized traits?

Accepted Answer

A)   Children the world over acquire reading skills at approximately the same time.
B)   Personality is a highly canalized trait and is unaffected by the kinds of families children grow up in.
C)   Cognition is a highly canalized trait and is independent of variations in experience.
D)   Babies the world over reach language milestones at approximately the same time and in the same order.

Exam 2: Conception, Environment, and Heredity

Autism is likely to have an environmental basis rather than a genetic basis and shows greater concordance between dizygotic twins than between monozygotic twins.

Correct AnswerverifiedShow Answer

The clinical service that advises prospective parents of their probable risk of having children with hereditary defects is known as

Correct AnswerverifiedShow Answer

In the context of the genetic code, the fundamental unit of heredity is a chemical called

Correct AnswerverifiedShow Answer

Obesity is measured by body mass index (BMI).

Correct AnswerverifiedTrue

Which of the following statements is true about phenylketonuria?

Correct AnswerverifiedShow Answer

Which of the following statements is true about adoption?

Correct AnswerverifiedShow Answer

Which of the following statements about obesity is true?

Correct AnswerverifiedShow Answer

The simplest form of assisted reproductive technology (ART) is ________, and it can facilitate conception if a man has a low sperm count.

Correct AnswerverifiedC

Which of the following is true of temperament?

Correct AnswerverifiedShow Answer

Incomplete dominance is a pattern of inheritance in which

Correct AnswerverifiedShow Answer

Which of the following statements is true about fertilization?

Correct AnswerverifiedShow Answer

Many studies suggest that schizophrenia

Correct AnswerverifiedShow Answer

If fertilization does not occur, the ovum and any sperm cells in the woman's body die.

Correct AnswerverifiedShow Answer

Permanent alterations in genes or chromosomes that usually produce harmful characteristics but provide the raw material of evolution are called mutations.

Correct AnswerverifiedShow Answer

In the context of birth defects, which of the following is true of sickle-cell anemia?

Correct AnswerverifiedShow Answer

Which of the following statements is true about Klinefelter syndrome?

Correct AnswerverifiedShow Answer

Meiosis is a type of cell division in which

Correct AnswerverifiedC

Beta thalassemia is a birth defect that

Correct AnswerverifiedShow Answer

________ are chromosomes that are not related to sexual expression.

Correct AnswerverifiedShow Answer

Which of the following is true about canalized traits?

Correct AnswerverifiedShow Answer

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True

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C

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C

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