Question 1

RNA interference, or iRNA, is being studied as a way to treat genetic disorders.

Accepted Answer

A) True 
 B)False

Question 2

About which percentage of the cell's DNA carry functional genes?

Accepted Answer

A)  1% 
B)  10% 
C)  25% 
D)  50% 
A)  1% 
B)  10% 
C)  25% 
D)  50%

Question 3

A mutation caused by the loss of nucleotide bases in DNA sequence is called a deletion mutation.

Accepted Answer

A) True 
 B)False

Question 4

Fatal mutations are the least harmful to the population as a whole.

Accepted Answer

A) True 
 B)False

Question 5

Osteogenesis imperfecta is a dominant genetic disorder of connective tissue.

Accepted Answer

A) True 
 B)False

Question 6

Match each of the terms with its corresponding definition.
-Ordered arrangement of photographs of chromosomes from a single cell; used in genetic counseling to identify chromosomal disorders

Accepted Answer

A) Recessive 
B) Codominance 
C) Monosomy 
D) Autosome 
E) Karyotype
F)Sex-linked trait
G)Dominant
H)Trisomy
I)Punnett square
J)Genome
K)Sex chromosome
L)Heterozygous
M)Homozygous
N)Genetics 
A) Recessive 
B) Codominance 
C) Monosomy 
D) Autosome 
E) Karyotype
F)Sex-linked trait
G)Dominant
H)Trisomy
I)Punnett square
J)Genome
K)Sex chromosome
L)Heterozygous
M)Homozygous
N)Genetics

Question 7

An adult who is homozygous for Tay-Sachs disease is more resistant to TB.

Accepted Answer

A) True 
 B)False

Question 8

There are 44 autosomes in most human cells.

Accepted Answer

A) True 
 B)False

Question 9

Many of the polypeptides formed by encoded genes are enzymes that control and regulate chemical reactions in the cell.

Accepted Answer

A) True 
 B)False

Question 10

DNA molecules are segments of a gene.

Accepted Answer

A) True 
 B)False

Question 11

Carriers of cystic fibrosis are thought to be protected from:

Accepted Answer

A)  malaria. 
B)  tuberculosis. 
C)  cholera. 
D)  the toxic effects of mold growing on grain. 
A)  malaria. 
B)  tuberculosis. 
C)  cholera. 
D)  the toxic effects of mold growing on grain.

Question 12

Match each condition with its corresponding statement or definition.
-Condition in which abnormal lipids accumulate in the brain and cause tissue damage leading to death by age 4

Accepted Answer

A) Down syndrome 
B) Huntington disease 
C) Klinefelter syndrome deficiency 
D) Multiple neurofibromatosis 
E) Parkinson disease
F)Retinitis pigmentosa
G)Severe combined immune deficiency
H)Tay-Sachs disease 
A) Down syndrome 
B) Huntington disease 
C) Klinefelter syndrome deficiency 
D) Multiple neurofibromatosis 
E) Parkinson disease
F)Retinitis pigmentosa
G)Severe combined immune deficiency
H)Tay-Sachs disease

Question 13

Crossing over is a unique phenomenon that prevents genetic variation among offspring of a single set of parents.

Accepted Answer

A) True 
 B)False

Question 14

If a karyotype found an X chromosome, a Y chromosome, and three 21st chromosomes, it would indicate a _____ syndrome.

Accepted Answer

A)  female with Down 
B)  female with Turner 
C)  male with Klinefelter 
D)  male with Down 
A)  female with Down 
B)  female with Turner 
C)  male with Klinefelter 
D)  male with Down

Question 15

The shorter segment of a chromosome is called the:

Accepted Answer

A)  centromere. 
B)  s-arm. 
C)  p-arm. 
D)  q-arm. 
A)  centromere. 
B)  s-arm. 
C)  p-arm. 
D)  q-arm.

Question 16

The proteome is to proteins in the cell what the genome is to the DNA in the cell.

Accepted Answer

A) True 
 B)False

Question 17

The principle of independent assortment states that each gamete formed is likely to have the same set of 23 chromosomes.

Accepted Answer

A) True 
 B)False

Question 18

The Genome Project discovered that the human genome contains about 30,000 genes, about three times the number that was expected.

Accepted Answer

A) True 
 B)False

Question 19

The father determines the sex of the offspring.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following diseases is not a single-gene dominant trait?

Accepted Answer

A)  Huntington disease 
B)  Cystic fibrosis 
C)  Osteogenesis imperfecta 
D)  All of the above are single-gene dominant traits. 
A)  Huntington disease 
B)  Cystic fibrosis 
C)  Osteogenesis imperfecta 
D)  All of the above are single-gene dominant traits.

Exam 48: Genetics and Heredity

RNA interference, or iRNA, is being studied as a way to treat genetic disorders.

About which percentage of the cell's DNA carry functional genes?

A mutation caused by the loss of nucleotide bases in DNA sequence is called a deletion mutation.

Fatal mutations are the least harmful to the population as a whole.

Osteogenesis imperfecta is a dominant genetic disorder of connective tissue.

Match each of the terms with its corresponding definition. -Ordered arrangement of photographs of chromosomes from a single cell; used in genetic counseling to identify chromosomal disorders

An adult who is homozygous for Tay-Sachs disease is more resistant to TB.

There are 44 autosomes in most human cells.

Many of the polypeptides formed by encoded genes are enzymes that control and regulate chemical reactions in the cell.

DNA molecules are segments of a gene.

Carriers of cystic fibrosis are thought to be protected from:

Match each condition with its corresponding statement or definition. -Condition in which abnormal lipids accumulate in the brain and cause tissue damage leading to death by age 4

Crossing over is a unique phenomenon that prevents genetic variation among offspring of a single set of parents.

If a karyotype found an X chromosome, a Y chromosome, and three 21st chromosomes, it would indicate a _____ syndrome.

The shorter segment of a chromosome is called the:

The proteome is to proteins in the cell what the genome is to the DNA in the cell.

The principle of independent assortment states that each gamete formed is likely to have the same set of 23 chromosomes.

The Genome Project discovered that the human genome contains about 30,000 genes, about three times the number that was expected.

The father determines the sex of the offspring.

Which of the following diseases is not a single-gene dominant trait?

Organization of the Body

Homeostasis

Chemical Basis of Life

Biomolecules

Cell Structure

Cell Function

Cell Growth and Development

Introduction to Tissues

Tissue Types

Skin

Skeletal Tissues

Axial Skeleton

Appendicular Skeleton

Articulations

Axial Muscles

Appendicular Muscles

Muscle Contraction

Nervous System Cells

Nerve Signaling

Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

General Senses

Special Senses

Endocrine Regulation

Endocrine Glands

Blood

Heart

Blood Vessels

Circulation of the Blood

Lymphatic System

Innate Immunity

Adaptive Immunity

Stress

Respiratory Tract

Ventilation

Gas Exchange & Transport

Upper Digestive Tract

Lower Digestive Tract

Digestion and Absorption

Nutrition and Metabolism

Urinary System

Fluid and Electrolyte Balance

Acid Base Balance

Male Reproductive System

Female Reproductive System

Growth and Development

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