Question 1

Describe three possible hypotheses for the genetic basis of cancer.

Accepted Answer

1) The mutation hypothesis: This hypothe

Question 2

Fetal tissue can be collected by amniocentesis, a procedure in which fetal cells floating in the amniotic fluid are collected with a syringe.

Accepted Answer

A) True 
 B)False

Question 3

In the therapy called gene augmentation:

Accepted Answer

A) genes that specify production of abnormal, disease-causing proteins are replaced by normal, or "therapeutic," genes. 
B) hormones are used to treat the genetic disease. 
C) diet is used to alleviate the symptoms of the genetic disease. 
D) genetically altered cells are added to the body. 
A) genes that specify production of abnormal, disease-causing proteins are replaced by normal, or "therapeutic," genes. 
B) hormones are used to treat the genetic disease. 
C) diet is used to alleviate the symptoms of the genetic disease. 
D) genetically altered cells are added to the body.

Question 4

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 5

Polygenic traits have more than one gene pair that contributes to their expression.

Accepted Answer

A) True 
 B)False

Question 6

The symptoms of osteogenesis imperfecta frequently disappear after puberty.

Accepted Answer

A) True 
 B)False

Question 7

A chart that illustrates genetic relationships in a family over several generations is called a:

Accepted Answer

A) Punnett square. 
B) pedigree. 
C) genetic grid. 
D) karyotype. 
A) Punnett square. 
B) pedigree. 
C) genetic grid. 
D) karyotype.

Question 8

A karyotype is effective only in identifying chromosomal abnormalities.

Accepted Answer

A) True 
 B)False

Question 9

The scientific study of inheritance is called genetics.

Accepted Answer

A) True 
 B)False

Question 10

Only about half of the human population has 23 pairs of chromosomes in their cells.

Accepted Answer

A) True 
 B)False

Question 11

Some disease conditions, such as trisomy, always require the combined effects of inheritance and environmental factors.

Accepted Answer

A) True 
 B)False

Question 12

A color-blind woman must have had a color-blind father.

Accepted Answer

A) True 
 B)False

Question 13

Chromosome 1 contains the most number of genes, nearly:

Accepted Answer

A) 3000. 
B) 2000. 
C) 1000. 
D) 5000. 
A) 3000. 
B) 2000. 
C) 1000. 
D) 5000.

Question 14

Explain the principle of independent assortment.

Accepted Answer

The principle of independent assortment

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

Pseudogenes are gene fragments that can be reassembled to form a variety of polypeptides.

Accepted Answer

A) True 
 B)False

Question 17

Match each condition with its corresponding statement or definition.
-Degenerative brain disorder characterized by chorea, progressing to severe dementia and death generally by age 55

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 18

Gregor Mendel began the scientific study of genetics in the:

Accepted Answer

A) 1760s. 
B) 1800s. 
C) 1860s. 
D) 1920s. 
A) 1760s. 
B) 1800s. 
C) 1860s. 
D) 1920s.

Question 19

Which of the following is not a true statement?

Accepted Answer

A) The gametes contain only 23 chromosomes. 
B) A zygote has a haploid number of chromosomes. 
C) The pair of sex chromosomes may not match. 
D) The 22 pairs of autosomes always appear to be nearly identical to each other. 
A) The gametes contain only 23 chromosomes. 
B) A zygote has a haploid number of chromosomes. 
C) The pair of sex chromosomes may not match. 
D) The 22 pairs of autosomes always appear to be nearly identical to each other.

Question 20

Which of the following conditions does not occur as a result of nondisjunction?

Accepted Answer

A) Tay-Sachs disease 
B) Down syndrome 
C) Turner syndrome 
D) Klinefelter syndrome 
A) Tay-Sachs disease 
B) Down syndrome 
C) Turner syndrome 
D) Klinefelter syndrome

Exam 48: Genetics and Heredity

Describe three possible hypotheses for the genetic basis of cancer.

Fetal tissue can be collected by amniocentesis, a procedure in which fetal cells floating in the amniotic fluid are collected with a syringe.

In the therapy called gene augmentation:

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

Polygenic traits have more than one gene pair that contributes to their expression.

The symptoms of osteogenesis imperfecta frequently disappear after puberty.

A chart that illustrates genetic relationships in a family over several generations is called a:

A karyotype is effective only in identifying chromosomal abnormalities.

The scientific study of inheritance is called genetics.

Only about half of the human population has 23 pairs of chromosomes in their cells.

Some disease conditions, such as trisomy, always require the combined effects of inheritance and environmental factors.

A color-blind woman must have had a color-blind father.

Chromosome 1 contains the most number of genes, nearly:

Explain the principle of independent assortment.

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

Pseudogenes are gene fragments that can be reassembled to form a variety of polypeptides.

Match each condition with its corresponding statement or definition. -Degenerative brain disorder characterized by chorea, progressing to severe dementia and death generally by age 55

Gregor Mendel began the scientific study of genetics in the:

Which of the following is not a true statement?

Which of the following conditions does not occur as a result of nondisjunction?

Organization of the Body

Homeostasis

Chemistry 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, Development, and Aging

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