Question 1

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

Question 2

The cri du chat syndrome represents a chromosomal mutation type termed

Accepted Answer

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

Question 3

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

Question 4

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

Question 5

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. 
A) translocation. 
B) duplication. 
C) deletion. 
D) inversion. 
E) polyploid.

Question 6

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 fibrosis 
A) hemophilia 
B) color-blindness 
C) muscular dystrophy 
D) Down syndrome 
E) cystic fibrosis

Question 7

Which refers to the loss of a complete chromosome?

Accepted Answer

A) inversion 
B) translocation 
C) deletion 
D) duplication 
E) monosomy 
A) inversion 
B) translocation 
C) deletion 
D) duplication 
E) monosomy

Question 8

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 chat 
A) Klinefelter 
B) Turner 
C) Down 
D) fragile X 
E) cri du chat

Question 9

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

Question 10

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

Accepted Answer

A) inversion 
B) translocation 
C) deletion 
D) duplication 
E) monosomy 
A) inversion 
B) translocation 
C) deletion 
D) duplication 
E) monosomy

Question 11

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

Question 12

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. 
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.

Question 13

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. 
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.

Question 14

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

Question 15

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. 
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.

Question 16

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. 
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.

Question 17

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) hemophilia 
A) Down syndrome 
B) phenylketonuria 
C) neurofibromatosis 
D) cystic fibrosis 
E) hemophilia

Question 18

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

Question 19

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

Question 20

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. 
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.

Exam 24: Chromosomal Inheritance and Genetic Disorders

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

The cri du chat syndrome represents a chromosomal mutation type termed

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

The most common autosomal abnormality present in people is

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

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

Which refers to the loss of a complete chromosome?

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

All of the genes on a single chromosome are

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

The location of a gene on a chromosome is called

Which statement is true regarding the Barr body?

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

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

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

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

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

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

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

What is the relationship between linked genes and independent assortment?

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