Question 1

When both of the alleles for a trait, such as hair color, are the same, the person is said to be _____ for that trait.

Accepted Answer

A)   monozygotic
B)   dizygotic
C)   homozygous
D)   hemizygousE) None of the above
F) B) and C)

Question 2

Color blindness is a sex-linked abnormality.

Accepted Answer

A) True 
 B)False

Question 3

According to a study in 2013 by van Gameren-Oosterom, individuals with Down's syndrome:

Accepted Answer

A)   are unlikely to die from cardiovascular problems by middle age.
B)   have no specific characteristic features.
C)   show deficits in cognitive development.
D)   are likely to have only 46 chromosomes.E) B) and C)
F) A) and C)

Question 4

Genotypes reflect both genetic and environmental influences.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is a characteristic of supermales?​

Accepted Answer

A)   They are somewhat taller than average.
B)   Their facial hair growth is minimal when compared to XXX males.
C)   They suffer from gynecomastia.
D)   They are typically impotent.E) A) and B)
F) None of the above

Question 6

Which of the following happens during mitosis?

Accepted Answer

A)   Strands of deoxyribonucleic acid (DN
A)   break apart.
B)   Adenine combines with its appropriate partner, cytosine.
C)   Sperm and ova cells are created.
D)   23 chromosomes are created.E) A) and B)
F) A) and C)

Question 7

Which of the following is true of a sperm cell?

Accepted Answer

A)   It is significantly larger than an egg cell.
B)   It contains two Y chromosomes.
C)   It travels randomly inside a woman's reproductive tract.
D)   It is one of the smallest types of cells in the body.E) C) and D)
F) B) and D)

Question 8

According to a study in the year 2013 by Fellman, which of the following is true of fertility drugs?

Accepted Answer

A)   They enhance the chances of multiple births.
B)   They stop ova from ripening.
C)   They should be taken orally and not injected.
D)   They suppress the hormone-secretion process.E) A) and B)
F) All of the above

Question 9

Who among the following share 100% of their genes?​

Accepted Answer

A)   Biovular twins
B)   Fraternal twins
C)   Dizygotic (DZ)  twins
D)   Monozygotic (MZ)  twinsE) A) and D)
F) B) and D)

Question 10

Duchenne muscular dystrophy is a sex-linked abnormality.

Accepted Answer

A) True 
 B)False

Question 11

Rico is a man who has enlarged breasts and suffers from mild mental retardation. He has a problem learning languages, and his body produces less of the male sex hormone testosterone than normal males. Rico is most likely suffering from:

Accepted Answer

A)   Klinefelter syndrome.
B)   Tay-Sachs disease.
C)   Turner syndrome.
D)   Down's syndrome.E) B) and D)
F) B) and C)

Question 12

Monozygotic (MZ) twins are known as fraternal twins.

Accepted Answer

A) True 
 B)False

Question 13

Amniocentesis is a procedure used in abortion.

Accepted Answer

A) True 
 B)False

Question 14

How does the amniotic sac protect the embryo and fetus?

Accepted Answer

​The embryo and fetus develop within a p...

Question 15

Each member of a pair of genes is termed a(n)  _____.

Accepted Answer

A)   allele
B)   zygote
C)   autosome
D)   nodeE) B) and C)
F) None of the above

Question 16

If an individual gets a recessive allele for eye color from both parents, the:​

Accepted Answer

A)   gender of the child will determine if that trait is shown.
B)   recessive trait will develop in the child.
C)   recessive trait will develop 50% of the time.
D)   recessive trait will be suppressed and the dominant trait will be expressed.E) A) and B)
F) A) and C)

Question 17

As women reach the end of their childbearing years, ovulation becomes more regular.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is true of Down's syndrome?​

Accepted Answer

A)   It is usually caused by a defect in the sex chromosomes of an individual.
B)   The symptoms of Down's syndrome are similar to those of sickle-cell anemia.
C)   It is caused by a sexually transmitted infection (STI)  during conception.
D)   The probability of having a child with Down's syndrome increases with the age of the parents.E) All of the above
F) B) and C)

Question 19

According to a study in 2014 by Skakkebaek et al., who among the following is most likely to have gynecomastia?​

Accepted Answer

A)   Jennifer, a dancer, who has Down's syndrome
B)   Frank, a teacher, who is diagnosed with XYY syndrome
C)   Peter, a fashion designer, who has Klinefelter syndrome
D)   Ria, a gym instructor, who is diagnosed with Turner syndromeE) B) and D)
F) A) and D)

Question 20

The probability of having a child with Down's syndrome increases with the age of the parents.

Accepted Answer

A) True 
 B)False

Exam 2: Heredity and Prenatal Development

Who among the following share 100% of their genes?​

Correct AnswerverifiedShow Answer

Which of the following is true of a sperm cell?

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of supermales?​

Correct AnswerverifiedShow Answer

How does the amniotic sac protect the embryo and fetus?

Correct Answerverified​The embryo and fetus develop within a p...View AnswerShow Answer

Which of the following is true of Down's syndrome?​

Correct AnswerverifiedShow Answer

Duchenne muscular dystrophy is a sex-linked abnormality.

Correct AnswerverifiedShow Answer

According to a study in 2013 by van Gameren-Oosterom, individuals with Down's syndrome:

Correct AnswerverifiedShow Answer

According to a study in 2014 by Skakkebaek et al., who among the following is most likely to have gynecomastia?​

Correct AnswerverifiedShow Answer

When both of the alleles for a trait, such as hair color, are the same, the person is said to be _____ for that trait.

Correct AnswerverifiedShow Answer

According to a study in the year 2013 by Fellman, which of the following is true of fertility drugs?

Correct AnswerverifiedShow Answer

Genotypes reflect both genetic and environmental influences.

Correct AnswerverifiedShow Answer

Color blindness is a sex-linked abnormality.

Correct AnswerverifiedShow Answer

The probability of having a child with Down's syndrome increases with the age of the parents.

Correct AnswerverifiedShow Answer

Rico is a man who has enlarged breasts and suffers from mild mental retardation. He has a problem learning languages, and his body produces less of the male sex hormone testosterone than normal males. Rico is most likely suffering from:

Correct AnswerverifiedShow Answer

As women reach the end of their childbearing years, ovulation becomes more regular.

Correct AnswerverifiedShow Answer

Amniocentesis is a procedure used in abortion.

Correct AnswerverifiedShow Answer

Which of the following happens during mitosis?

Correct AnswerverifiedShow Answer

Monozygotic (MZ) twins are known as fraternal twins.

Correct AnswerverifiedShow Answer

If an individual gets a recessive allele for eye color from both parents, the:​

Correct AnswerverifiedShow Answer

Each member of a pair of genes is termed a(n) _____.

Correct AnswerverifiedShow Answer

Who among the following share 100% of their genes?

Correct Answer
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Which of the following is a characteristic of supermales?

Correct Answer
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The embryo and fetus develop within a p...
View Answer

Which of the following is true of Down's syndrome?

Correct Answer
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Correct Answer
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According to a study in 2014 by Skakkebaek et al., who among the following is most likely to have gynecomastia?

Correct Answer
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If an individual gets a recessive allele for eye color from both parents, the:

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Correct Answer
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