Question 1

Klinefelter syndrome occurs approximately _____ live male births.

Accepted Answer

A)  once in every 100
B)  once in every 1,000
C)  once in every 10,000
D)  once in every 100,000E) B) and D)
F) C) and D)

Question 2

A phenotype can consist of _____ as well as _____ characteristics.

Accepted Answer

A)  physical; environmental
B)  conscious; subconscious
C)  biological; ecological
D)  physical; psychologicalE) A) and B)
F) A) and C)

Question 3

Which of the following statements about Turner syndrome is true?

Accepted Answer

A)  Turner syndrome occurs exclusively in females.
B)  People with Turner syndrome have extremely poor verbal ability.
C)  Males with Turner syndrome are short in stature and have webbed necks.
D)  Turner syndrome occurs in approximately 1 of every 25,000 live female births.E) All of the above
F) B) and C)

Question 4

Which of the following is the vascular organ that links the fetus to the mother's uterus?

Accepted Answer

A)  Fallopian tube
B)  Ovary
C)  Placenta
D)  CervixE) B) and D)
F) B) and C)

Question 5

According to life-span developmentalist Paul Baltes,the benefits conferred by evolutionary selection decrease with age.Natural selection has not weeded out many harmful conditions and nonadaptive characteristics that appear among older adults.Why?

Accepted Answer

A)  Degeneration aids in the transmission of desirable traits to future generations.
B)  Natural selection operates primarily on characteristics that are tied to reproductive fitness.
C)  Human evolution has no effect on previous generations.
D)  Evolved mechanisms are always adaptive in contemporary society.E) C) and D)
F) A) and C)

Question 6

_____ genes are those that make an individual less vulnerable to certain diseases and make it more likely for him/her to live till an older age.

Accepted Answer

A)  Susceptibility
B)  Longevity
C)  Vulnerability
D)  MutatedE) C) and D)
F) B) and C)

Question 7

Don and Ellie are trying to conceive a baby.How long should they wait before they suspect infertility?

Accepted Answer

A)  3 months
B)  12 months
C)  18 months
D)  24 monthsE) All of the above
F) None of the above

Question 8

Tom is a tall man with undeveloped testes and enlarged breasts.His doctor has determined that he has an extra X chromosome leading to the diagnosis of:

Accepted Answer

A)  Down syndrome.
B)  Fragile X syndrome.
C)  Klinefelter syndrome.
D)  Turner syndrome.E) A) and C)
F) B) and C)

Question 9

Which of the following is an example of chromosomal abnormality that occurs when whole chromosomes do not separate properly during meiosis?

Accepted Answer

A)  Down syndrome
B)  Hemophilia
C)  Huntington's disease
D)  Sickle-cell anemiaE) A) and D)
F) A) and C)

Question 10

Palomar is pregnant.During the early stages of her pregnancy,the single zygote splits into two genetically identical replicas.Her doctor tells her she is going to have _____ twins.

Accepted Answer

identical ...

Question 11

Turner syndrome occurs in approximately _____ live female births.

Accepted Answer

A)  1 of every 100
B)  1 of every 2,500
C)  1 of every 22,500
D)  1 of every 40,000E) B) and C)
F) A) and B)

Question 12

Timothy is a quiet six-year-old who is usually withdrawn in class.As a result,he does not receive much attention from his peers and mostly plays by himself.According to Sandra Scarr,this is an example of a(n) :

Accepted Answer

A)  passive genotype-environment correlation.
B)  active (niche-picking) genotype-environment correlation.
C)  gene x environment interaction.
D)  evocative genotype-environment correlation.E) A) and D)
F) A) and B)

Question 13

If a baboon learns to eat many different kinds of fruit instead of relying on only one kind for its nutritive needs,we would argue that this behavior promotes its survival.Thus,the behavior is:

Accepted Answer

A)  adaptive.
B)  aggressive.
C)  dominant.
D)  submissive.E) A) and B)
F) A) and C)

Question 14

Summer and Clark are considering undergoing fertility treatments.What is one of the main risk factors that the couple must be aware of while weighing their options?

Accepted Answer

A)  High birth weight in babies conceived through such treatments.
B)  An increase in the possibility of multiple births when such treatments are used.
C)  Negative psychological impact on children conceived through such treatments.
D)  Significant differences in developmental outcomes for children conceived through such treatments.E) A) and D)
F) A) and C)

Question 15

A cell that contains 23 pairs of chromosomes,divides by mitosis to form two new cells.How many pairs of chromosomes does each new cell contain?

Accepted Answer

A)  12
B)  23
C)  6
D)  48E) A) and D)
F) None of the above

Question 16

A mistake by the cellular machinery,or damage from an environmental agent such as radiation,may produce a _____,which is a permanently altered segment of DNA.

Accepted Answer

A)  susceptibility gene
B)  vulnerability gene
C)  longevity gene
D)  mutated geneE) A) and B)
F) A) and C)

Question 17

A chromosomal abnormality is characterized by an extra copy of chromosome 21.A person with this disorder typically has a round face,a flattened skull,an extra fold of skin over the eyelids,a protruding tongue,short limbs,and retardation of motor and mental abilities.What is this disorder called?

Accepted Answer

The answer of A chromosomal abnormality is characterized by an...

Question 18

Phenylketonuria (PKU) occurs in approximately _____ live births.

Accepted Answer

A)  1 of every 100 to 200
B)  1 of every 1,000 to 2,000
C)  1 of every 10,000 to 20,000
D)  1 of every 100,000 to 150,000E) C) and D)
F) A) and C)

Question 19

Explain the genome-wide association method and how it has been used to help identify genetic variations of diseases?

Accepted Answer

Researchers obtained the DNA from those ...

Question 20

Harry has been suffering from mental retardation and a learning disability since infancy.Subsequent tests revealed an abnormality in his X chromosome,which becomes constricted and often breaks.Identify the syndrome that Harry suffers from.

Accepted Answer

A)  Turner syndrome
B)  Fragile X syndrome
C)  XYY syndrome
D)  Klinefelter syndromeE) All of the above
F) B) and D)

Exam 2: Biological Beginnings

Which of the following is the vascular organ that links the fetus to the mother's uterus?

Correct AnswerverifiedShow Answer

Tom is a tall man with undeveloped testes and enlarged breasts.His doctor has determined that he has an extra X chromosome leading to the diagnosis of:

Correct AnswerverifiedShow Answer

_____ genes are those that make an individual less vulnerable to certain diseases and make it more likely for him/her to live till an older age.

Correct AnswerverifiedShow Answer

Explain the genome-wide association method and how it has been used to help identify genetic variations of diseases?

Correct AnswerverifiedResearchers obtained the DNA from those ...View AnswerShow Answer

Timothy is a quiet six-year-old who is usually withdrawn in class.As a result,he does not receive much attention from his peers and mostly plays by himself.According to Sandra Scarr,this is an example of a(n) :

Correct AnswerverifiedShow Answer

Which of the following is an example of chromosomal abnormality that occurs when whole chromosomes do not separate properly during meiosis?

Correct AnswerverifiedShow Answer

A chromosomal abnormality is characterized by an extra copy of chromosome 21.A person with this disorder typically has a round face,a flattened skull,an extra fold of skin over the eyelids,a protruding tongue,short limbs,and retardation of motor and mental abilities.What is this disorder called?

Correct AnswerverifiedShow Answer

Summer and Clark are considering undergoing fertility treatments.What is one of the main risk factors that the couple must be aware of while weighing their options?

Correct AnswerverifiedShow Answer

If a baboon learns to eat many different kinds of fruit instead of relying on only one kind for its nutritive needs,we would argue that this behavior promotes its survival.Thus,the behavior is:

Correct AnswerverifiedShow Answer

A phenotype can consist of _____ as well as _____ characteristics.

Correct AnswerverifiedShow Answer

A mistake by the cellular machinery,or damage from an environmental agent such as radiation,may produce a _____,which is a permanently altered segment of DNA.

Correct AnswerverifiedShow Answer

Phenylketonuria (PKU) occurs in approximately _____ live births.

Correct AnswerverifiedShow Answer

Klinefelter syndrome occurs approximately _____ live male births.

Correct AnswerverifiedShow Answer

A cell that contains 23 pairs of chromosomes,divides by mitosis to form two new cells.How many pairs of chromosomes does each new cell contain?

Correct AnswerverifiedShow Answer

According to life-span developmentalist Paul Baltes,the benefits conferred by evolutionary selection decrease with age.Natural selection has not weeded out many harmful conditions and nonadaptive characteristics that appear among older adults.Why?

Correct AnswerverifiedShow Answer

Don and Ellie are trying to conceive a baby.How long should they wait before they suspect infertility?

Correct AnswerverifiedShow Answer

Harry has been suffering from mental retardation and a learning disability since infancy.Subsequent tests revealed an abnormality in his X chromosome,which becomes constricted and often breaks.Identify the syndrome that Harry suffers from.

Correct AnswerverifiedShow Answer

Palomar is pregnant.During the early stages of her pregnancy,the single zygote splits into two genetically identical replicas.Her doctor tells her she is going to have _____ twins.

Correct Answerverifiedidentical ...View AnswerShow Answer

Turner syndrome occurs in approximately _____ live female births.

Correct AnswerverifiedShow Answer

Which of the following statements about Turner syndrome is true?

Correct AnswerverifiedShow Answer

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Researchers obtained the DNA from those ...
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A phenotype can consist of _ as well as _ characteristics.

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identical ...
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