Question 1

Exons are removed from transcribed RNA to form the functional mRNA strand.

Accepted Answer

A) True 
 B)False  False

Question 2

A sperm containing a Y chromosome swims faster than a sperm containing an X chromosome.

Accepted Answer

A) True 
 B)False  True

Question 3

In human blood type, types A and B are codominant, producing type AB. They are both dominant to the recessive O type. Which of the following parental genotypes could produce a child with type O blood?

Accepted Answer

A)  AB x AO 
B)  AO x BO 
C)  AO x BB 
D)  None of the above genotypes can produce a type O offspring. 
A)  AB x AO 
B)  AO x BO 
C)  AO x BB 
D)  None of the above genotypes can produce a type O offspring. B

Question 4

The condition called trisomy results from a(n):

Accepted Answer

A)  mistake in mitosis called nondisjunction. 
B)  mistake in meiosis called nondisjunction. 
C)  abnormality in a single gene. 
D)  genetic predisposition. 
A)  mistake in mitosis called nondisjunction. 
B)  mistake in meiosis called nondisjunction. 
C)  abnormality in a single gene. 
D)  genetic predisposition.

Question 5

An individual possessing the sex chromosome combination "XY" is genetically:

Accepted Answer

A)  a male. 
B)  a female. 
C)  both. 
D)  neither. 
A)  a male. 
B)  a female. 
C)  both. 
D)  neither.

Question 6

Each offspring from a single set of parents is likely to be genetically unique.

Accepted Answer

A) True 
 B)False

Question 7

The Y chromosome is larger than the X chromosome.

Accepted Answer

A) True 
 B)False

Question 8

A mutagen causes a change in the genetic code.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following statements is not true of mitochondrial DNA?

Accepted Answer

A)  The DNA is in the form of a circle. 
B)  The usual "stop" code in nuclear DNA codes for an amino acid in mitochondrial DNA. 
C)  The mitochondrial DNA in the zygote comes only from the mother. 
D)  All of the above statements are true of mitochondrial DNA. 
A)  The DNA is in the form of a circle. 
B)  The usual "stop" code in nuclear DNA codes for an amino acid in mitochondrial DNA. 
C)  The mitochondrial DNA in the zygote comes only from the mother. 
D)  All of the above statements are true of mitochondrial DNA.

Question 10

A person with heterozygous sex chromosomes is a female.

Accepted Answer

A) True 
 B)False

Question 11

The inheritance of a genetic risk factor is not sufficient to cause a disease.

Accepted Answer

A) True 
 B)False

Question 12

Match each of the terms with its corresponding definition.
-The scientific study of inheritance

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 13

Mitochondrial inheritance is known to transmit genes for several degenerative nerve and muscle disorders.

Accepted Answer

A) True 
 B)False

Question 14

The hypothesis regarding tumor suppressor genes states that these genes:

Accepted Answer

A)  can transform a cell into a cancer cell only when certain environmental conditions occur. 
B)  regulate cell division so that it proceeds normally. 
C)  govern the cell's ability to repair damaged DNA. 
D)  Both A and C are correct. 
A)  can transform a cell into a cancer cell only when certain environmental conditions occur. 
B)  regulate cell division so that it proceeds normally. 
C)  govern the cell's ability to repair damaged DNA. 
D)  Both A and C are correct.

Question 15

Carriers of Tay-Sachs disease have a higher resistance to:

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 16

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

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is not a type of RNA?

Accepted Answer

A)  Mitochondrial RNA 
B)  Ribosomal RNA 
C)  Transfer RNA 
D)  All of the above are types of RNA. 
A)  Mitochondrial RNA 
B)  Ribosomal RNA 
C)  Transfer RNA 
D)  All of the above are types of RNA.

Question 18

Red-green color blindness shows X-linked recessive inheritance. Assume "X" is normal, "X1" is recessive for the trait, and "Y" is normal. Then, an individual with the genotype "XX1" will be a:

Accepted Answer

A)  normal female and a carrier. 
B)  color-blind male. 
C)  normal female and not a carrier. 
D)  normal male. 
A)  normal female and a carrier. 
B)  color-blind male. 
C)  normal female and not a carrier. 
D)  normal male.

Question 19

The chromosome with the fewest number of genes is carried by about only half the population.

Accepted Answer

A) True 
 B)False

Question 20

The chromosome that has the fewest genes contains only 200 genes and is called:

Accepted Answer

A)  chromosome 1. 
B)  chromosome 7. 
C)  Y chromosome. 
D)  X chromosome. 
A)  chromosome 1. 
B)  chromosome 7. 
C)  Y chromosome. 
D)  X chromosome.

Exam 48: Genetics and Heredity

Exons are removed from transcribed RNA to form the functional mRNA strand.

A sperm containing a Y chromosome swims faster than a sperm containing an X chromosome.

In human blood type, types A and B are codominant, producing type AB. They are both dominant to the recessive O type. Which of the following parental genotypes could produce a child with type O blood?

The condition called trisomy results from a(n):

An individual possessing the sex chromosome combination "XY" is genetically:

Each offspring from a single set of parents is likely to be genetically unique.

The Y chromosome is larger than the X chromosome.

A mutagen causes a change in the genetic code.

Which of the following statements is not true of mitochondrial DNA?

A person with heterozygous sex chromosomes is a female.

The inheritance of a genetic risk factor is not sufficient to cause a disease.

Match each of the terms with its corresponding definition. -The scientific study of inheritance

Mitochondrial inheritance is known to transmit genes for several degenerative nerve and muscle disorders.

The hypothesis regarding tumor suppressor genes states that these genes:

Carriers of Tay-Sachs disease have a higher resistance to:

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

Which of the following is not a type of RNA?

Red-green color blindness shows X-linked recessive inheritance. Assume "X" is normal, "X1" is recessive for the trait, and "Y" is normal. Then, an individual with the genotype "XX1" will be a:

The chromosome with the fewest number of genes is carried by about only half the population.

The chromosome that has the fewest genes contains only 200 genes and is called:

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

Filters