Question 1

A prenatal diagnosis procedure that has recently come into wide use can be performed earlier than amniocentesis, and it involves sampling the

Accepted Answer

A) yolk sac material. 
B) allantois. 
C) chorion. 
D) yolk sac. 
E) umbilical cord. 
A) yolk sac material. 
B) allantois. 
C) chorion. 
D) yolk sac. 
E) umbilical cord.

Question 2

Hemophilia A

Accepted Answer

A) is rare in the human population. 
B) is more common among men. 
C) was common in the descendents of Queen Victoria. 
D) is an X-linked recessive trait. 
E) is all of these. 
A) is rare in the human population. 
B) is more common among men. 
C) was common in the descendents of Queen Victoria. 
D) is an X-linked recessive trait. 
E) is all of these.

Question 3

The failure of chromosomes to separate during mitosis or meiosis is called

Accepted Answer

A) genetic displacement. 
B) trisomy. 
C) crossing over. 
D) nondisjunction. 
E) disjunction. 
A) genetic displacement. 
B) trisomy. 
C) crossing over. 
D) nondisjunction. 
E) disjunction.

Question 4

Which of the following would be the least satisfactory organism for genetic research?

Accepted Answer

A) humans 
B) bacteria 
C) corn 
D) fruit flies 
E) peas 
A) humans 
B) bacteria 
C) corn 
D) fruit flies 
E) peas

Question 5

Like many genetic disorders, galactosemia is a disruption of a metabolic pathway due to a malfunctioning

Accepted Answer

A) reactant. 
B) cofactor. 
C) mineral. 
D) energy source. 
E) product. 
A) reactant. 
B) cofactor. 
C) mineral. 
D) energy source. 
E) product.

Question 6

Chromosomes other than those involved in sex determination are known as

Accepted Answer

A) nucleosomes. 
B) hematosomes. 
C) alleles. 
D) autosomes. 
E) liposomes. 
A) nucleosomes. 
B) hematosomes. 
C) alleles. 
D) autosomes. 
E) liposomes.

Question 7

The sex chromosome composition of a person with Klinefelter syndrome is

Accepted Answer

A) XXX. 
B) XO. 
C) XXY. 
D) XYY. 
E) none of these. 
A) XXX. 
B) XO. 
C) XXY. 
D) XYY. 
E) none of these.

Question 8

In karyotyping, individual chromosomes may be distinguished from others by

Accepted Answer

A) a comparison of chromosome lengths. 
B) bands produced on chromosomes by differential staining. 
C) the position of centromeres. 
D) all of these. 
E) none of these. 
A) a comparison of chromosome lengths. 
B) bands produced on chromosomes by differential staining. 
C) the position of centromeres. 
D) all of these. 
E) none of these.

Question 9

In a pedigree chart, a female who does not demonstrate the trait being studied is represented by a

Accepted Answer

A) darkened square. 
B) clear diamond. 
C) clear circle. 
D) darkened triangle. 
E) darkened oval. 
A) darkened square. 
B) clear diamond. 
C) clear circle. 
D) darkened triangle. 
E) darkened oval.

Question 10

Which of the following statements is false?

Accepted Answer

A) The SRY gene is absent in all females. 
B) The SRY gene apparently is the gene that controls the development of male sexuality. 
C) The development of maleness is by default because males lack two X chromosomes. 
D) The human Y chromosome carries 307 genes. 
E) Genes on the X chromosome govern color vision. 
A) The SRY gene is absent in all females. 
B) The SRY gene apparently is the gene that controls the development of male sexuality. 
C) The development of maleness is by default because males lack two X chromosomes. 
D) The human Y chromosome carries 307 genes. 
E) Genes on the X chromosome govern color vision.

Question 11

A human X-linked recessive gene may be

Accepted Answer

A) found on the Y chromosome. 
B) passed to daughters from their fathers. 
C) passed to sons from their mothers. 
D) expressed more commonly among females. 
E) passed to daughters from their fathers and passed to sons from their mothers. 
A) found on the Y chromosome. 
B) passed to daughters from their fathers. 
C) passed to sons from their mothers. 
D) expressed more commonly among females. 
E) passed to daughters from their fathers and passed to sons from their mothers.

Question 12

A human X-linked gene is

Accepted Answer

A) found only in males. 
B) more frequently expressed in females. 
C) found on the Y chromosome. 
D) transmitted from father to son. 
E) found on the X chromosome. 
A) found only in males. 
B) more frequently expressed in females. 
C) found on the Y chromosome. 
D) transmitted from father to son. 
E) found on the X chromosome.

Question 13

In a pedigree chart, a male showing the specific trait being studied is indicated by a

Accepted Answer

A) darkened square. 
B) clear square. 
C) darkened diamond. 
D) clear triangle. 
E) darkened circle. 
A) darkened square. 
B) clear square. 
C) darkened diamond. 
D) clear triangle. 
E) darkened circle.

Question 14

50% of the male sex chromosomes

Accepted Answer

A) are Y. 
B) are X. 
C) are XY. 
D) are either X or Y. 
E) are none of these. 
A) are Y. 
B) are X. 
C) are XY. 
D) are either X or Y. 
E) are none of these.

Question 15

If a study of several pedigrees demonstrates that two parents express a characteristic and none of their children express it, then the trait is controlled by

Accepted Answer

A) a codominant gene. 
B) a simple dominant gene. 
C) a recessive gene. 
D) a sex-linked gene. 
E) No conclusion can be drawn. 
A) a codominant gene. 
B) a simple dominant gene. 
C) a recessive gene. 
D) a sex-linked gene. 
E) No conclusion can be drawn.

Question 16

The human X chromosome

Accepted Answer

A) is found in females. 
B) is found in males. 
C) carries different genes than the Y chromosome. 
D) interacts with a Y chromosome as homologues during meiosis. 
E) fits all of these descriptions. 
A) is found in females. 
B) is found in males. 
C) carries different genes than the Y chromosome. 
D) interacts with a Y chromosome as homologues during meiosis. 
E) fits all of these descriptions.

Question 17

Queen Victoria

Accepted Answer

A) was a carrier of hemophilia A. 
B) had a hemophilic parent. 
C) had hemophilia A. 
D) married a man with hemophilia A. 
E) had a hemophilic parent and married a man with hemophilia A. 
A) was a carrier of hemophilia A. 
B) had a hemophilic parent. 
C) had hemophilia A. 
D) married a man with hemophilia A. 
E) had a hemophilic parent and married a man with hemophilia A.

Question 18

Color blindness is an X-linked trait in humans.If a color-blind woman marries a man with normal vision, the children will be

Accepted Answer

A) all color-blind daughters, but normal sons.   
B) all color-blind sons, but carrier daughters. 
C) all normal sons, but carrier daughters. 
D) all color-blind children. 
E) all normal children. 
A) all color-blind daughters, but normal sons.   
B) all color-blind sons, but carrier daughters. 
C) all normal sons, but carrier daughters. 
D) all color-blind children. 
E) all normal children.

Question 19

Aneuploidy describes all of the following except

Accepted Answer

A) Turner syndrome. 
B) Klinefelter syndrome. 
C) translocation. 
D) XYY. 
E) Down syndrome. 
A) Turner syndrome. 
B) Klinefelter syndrome. 
C) translocation. 
D) XYY. 
E) Down syndrome.

Question 20

Creative individuals who suffered from neurobiological disorders include

Accepted Answer

A) Socrates. 
B) Beethoven. 
C) Woolf. 
D) Nash. 
E) All of these. 
A) Socrates. 
B) Beethoven. 
C) Woolf. 
D) Nash. 
E) All of these.

Exam 12: Chromosomes and Human Inheritance

A prenatal diagnosis procedure that has recently come into wide use can be performed earlier than amniocentesis, and it involves sampling the

Hemophilia A

The failure of chromosomes to separate during mitosis or meiosis is called

Which of the following would be the least satisfactory organism for genetic research?

Like many genetic disorders, galactosemia is a disruption of a metabolic pathway due to a malfunctioning

Chromosomes other than those involved in sex determination are known as

The sex chromosome composition of a person with Klinefelter syndrome is

In karyotyping, individual chromosomes may be distinguished from others by

In a pedigree chart, a female who does not demonstrate the trait being studied is represented by a

Which of the following statements is false?

A human X-linked recessive gene may be

A human X-linked gene is

In a pedigree chart, a male showing the specific trait being studied is indicated by a

50% of the male sex chromosomes

If a study of several pedigrees demonstrates that two parents express a characteristic and none of their children express it, then the trait is controlled by

The human X chromosome

Queen Victoria

Color blindness is an X-linked trait in humans.If a color-blind woman marries a man with normal vision, the children will be

Aneuploidy describes all of the following except

Creative individuals who suffered from neurobiological disorders include

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters