Question 1

The location of a gene on a chromosome is called

Accepted Answer

A)  a locus.
B)  homologous.
C)  a linkage map.
D)  a linkage group.
E)  an allele.F) D) and E)
G) C) and E)

Question 2

Which disorder is characterized by a lack of the protein dystrophin?

Accepted Answer

A)  hemophilia
B)  color-blindness
C)  muscular dystrophy
D)  Down syndrome
E)  cystic fibrosisF) A) and B)
G) C) and D)

Question 3

What is the relationship between linked genes and independent assortment?

Accepted Answer

A)  Linked genes show independent assortment.
B)  Linked genes do not show independent assortment.
C)  Whether or not genes are linked does not influence whether or not they show independent assortment.
D)  There is no relationship between linked genes and independent assortment.
E)  One of the linked genes will be inherited from the mother and the other one from the father.F) B) and C)
G) B) and E)

Question 4

Which trait is not part of the linkage group found on chromosome 19?

Accepted Answer

A)  production of elastin
B)  muscular dystrophy
C)  hair color (brown) 
D)  eye color (green/blue) 
E)  colorectal cancerF) B) and E)
G) C) and D)

Question 5

Which of the following conditions is NOT due to a sex-linked gene?

Accepted Answer

A)  color-blindness
B)  hemophilia
C)  muscular dystrophy
D)  Klinefelter syndrome
E)  inability to see red or greenF) B) and D)
G) C) and E)

Question 6

The cri du chat syndrome represents a chromosomal mutation type termed

Accepted Answer

A)  translocation.
B)  duplication.
C)  deletion.
D)  inversion.
E)  polyploidy.F) D) and E)
G) B) and D)

Question 7

Which genetic disorder is the result of a deletion of a section of an individual's chromosome?

Accepted Answer

A)  Williams syndrome
B)  Klinefelter syndrome
C)  Down syndrome
D)  Turner syndrome
E)  None of the answer choices is the result of a deletion of a section of an individual's chromosome.F) A) and E)
G) A) and D)

Question 8

A mother is a carrier for blue eyes (autosomal recessive) and for hemophilia (X-linked recessive) .Which of these is a correct statement?

Accepted Answer

A)  All sons will have blue eyes and be hemophiliacs.
B)  It depends on the father's genotype as to whether the sons will have blue eyes and/or be hemophiliacs.
C)  The father's genotype can determine whether a son will have blue eyes but cannot determine whether a son will be a hemophiliac.
D)  Regardless of the father,no sons will have blue eyes or be hemophiliacs.
E)  There is a linkage between eye color and hemophilia.F) A) and D)
G) C) and D)

Question 9

If a chromosomal segment appears more than once in the same chromosome,it is termed a(n)

Accepted Answer

A)  translocation.
B)  duplication.
C)  deletion.
D)  inversion.
E)  polyploid.F) None of the above
G) A) and C)

Question 10

Which one of the following disorders listed below is NOT caused by a change in chromosome structure?

Accepted Answer

A)  fragile X syndrome
B)  Klinefelter syndrome
C)  Williams syndrome
D)  cri du chat syndrome
E)  All of the answer choices are caused by a change in chromosome structure.F) A) and E)
G) B) and C)

Question 11

The most common autosomal abnormality present in people is

Accepted Answer

A)  XXX.
B)  XXY.
C)  XO.
D)  a deletion in chromosome 5.
E)  an extra chromosome 21.F) A) and E)
G) C) and D)

Question 12

Which refers to the addition of a repeat segment of a chromosome?

Accepted Answer

A)  inversion
B)  translocation
C)  deletion
D)  duplication
E)  monosomyF) C) and E)
G) A) and B)

Question 13

Which genetic trait is NOT associated with the chromosome involved in Down syndrome?

Accepted Answer

A)  increased incidence of leukemia
B)  cataracts
C)  mental retardation
D)  accelerated aging
E)  cystic fibrosisF) B) and C)
G) A) and D)

Question 14

Which statement is true regarding the Barr body?

Accepted Answer

A)  It is found in the nuclei of females.
B)  It is found in the nuclei of males.
C)  It is found in the cytoplasm of males.
D)  It is found in the cytoplasm of females.
E)  It is a condensed,inactive Y chromosome.F) A) and C)
G) C) and D)

Question 15

An individual who has an XXY combination of sex chromosomes is said to have _____ syndrome.

Accepted Answer

A)  Klinefelter
B)  Turner
C)  Down
D)  fragile X
E)  cri du chatF) A) and C)
G) C) and E)

Question 16

Karyotyping can be used to diagnose which of the following genetic disorders?

Accepted Answer

A)  Down syndrome
B)  phenylketonuria
C)  neurofibromatosis
D)  cystic fibrosis
E)  hemophiliaF) A) and C)
G) None of the above

Question 17

A female that does not undergo puberty or menstruate or lacks breast development may have

Accepted Answer

A)  Klinefelter syndrome.
B)  Down syndrome.
C)  cri du chat syndrome.
D)  Turner syndrome.
E)  poly-X female state.F) C) and E)
G) B) and C)

Question 18

All of the genes on a single chromosome are

Accepted Answer

A)  a locus.
B)  homologous.
C)  a linkage map.
D)  a linkage group.
E)  an allele.F) B) and E)
G) C) and E)

Question 19

If a person has a portion of number 5 chromosome missing,they may have

Accepted Answer

A)  Down syndrome.
B)  cri du chat syndrome.
C)  Turner syndrome.
D)  Klinefelter syndrome.
E)  Jacobs syndrome.F) A) and D)
G) A) and C)

Question 20

Which refers to the loss of a complete chromosome?

Accepted Answer

A)  inversion
B)  translocation
C)  deletion
D)  duplication
E)  monosomyF) C) and D)
G) A) and C)

Exam 24: Chromosomal Inheritance and Genetic Disorders

An individual who has an XXY combination of sex chromosomes is said to have _____ syndrome.

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If a chromosomal segment appears more than once in the same chromosome,it is termed a(n)

Correct AnswerverifiedShow Answer

Karyotyping can be used to diagnose which of the following genetic disorders?

Correct AnswerverifiedShow Answer

The location of a gene on a chromosome is called

Correct AnswerverifiedShow Answer

A mother is a carrier for blue eyes (autosomal recessive) and for hemophilia (X-linked recessive) .Which of these is a correct statement?

Correct AnswerverifiedShow Answer

The most common autosomal abnormality present in people is

Correct AnswerverifiedShow Answer

Which refers to the addition of a repeat segment of a chromosome?

Correct AnswerverifiedShow Answer

Which trait is not part of the linkage group found on chromosome 19?

Correct AnswerverifiedShow Answer

Which genetic disorder is the result of a deletion of a section of an individual's chromosome?

Correct AnswerverifiedShow Answer

Which one of the following disorders listed below is NOT caused by a change in chromosome structure?

Correct AnswerverifiedShow Answer

Which refers to the loss of a complete chromosome?

Correct AnswerverifiedShow Answer

Which disorder is characterized by a lack of the protein dystrophin?

Correct AnswerverifiedShow Answer

The cri du chat syndrome represents a chromosomal mutation type termed

Correct AnswerverifiedShow Answer

Which statement is true regarding the Barr body?

Correct AnswerverifiedShow Answer

What is the relationship between linked genes and independent assortment?

Correct AnswerverifiedShow Answer

Which genetic trait is NOT associated with the chromosome involved in Down syndrome?

Correct AnswerverifiedShow Answer

Which of the following conditions is NOT due to a sex-linked gene?

Correct AnswerverifiedShow Answer

If a person has a portion of number 5 chromosome missing,they may have

Correct AnswerverifiedShow Answer

All of the genes on a single chromosome are

Correct AnswerverifiedShow Answer

A female that does not undergo puberty or menstruate or lacks breast development may have

Correct AnswerverifiedShow Answer

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