Question 1

What is meant when a trait is classified as sex-linked? Give an example of such a trait.

Accepted Answer

When a trait is classified as sex-linked

Question 2

Which of the following diseases is carried by mitochondrial DNA?

Accepted Answer

A) Retinitis pigmentosa 
B) Severe combined immune deficiency 
C) Ocular albinism 
D) None of the above diseases is carried by mitochondrial DNA. 
A) Retinitis pigmentosa 
B) Severe combined immune deficiency 
C) Ocular albinism 
D) None of the above diseases is carried by mitochondrial DNA.

Question 3

Chorionic villus sampling is a newer procedure than amniocentesis.

Accepted Answer

A) True 
 B)False

Question 4

A pedigree is a chart that illustrates genetic relationships in a family over several generations.

Accepted Answer

A) True 
 B)False

Question 5

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 6

The principle of independent assortment states that:

Accepted Answer

A) each offspring from a single set of parents is very likely to be genetically unique. 
B) genetic variation is likely to occur during reproduction. 
C) after meiosis, each gamete produced is likely to have a different set of 23 chromosomes. 
D) all of the above are true. 
A) each offspring from a single set of parents is very likely to be genetically unique. 
B) genetic variation is likely to occur during reproduction. 
C) after meiosis, each gamete produced is likely to have a different set of 23 chromosomes. 
D) all of the above are true.

Question 7

If a mother is homozygous for normal skin color and the father is albino, none of their offspring will be albino.

Accepted Answer

A) True 
 B)False

Question 8

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 9

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 10

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 11

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 12

A person with heterozygous sex chromosomes is a female.

Accepted Answer

A) True 
 B)False

Question 13

In determining blood type, type A and type B are codominant to the recessive O type. If one parent had type A blood and one parent had type B blood, they could not have a child with type O blood.

Accepted Answer

A) True 
 B)False

Question 14

Sickle cell inheritance is a good example of how codominance works.

Accepted Answer

A) True 
 B)False

Question 15

Transcriptomics is the analysis of all the mRNA codes actually transcribed from the human genome.

Accepted Answer

A) True 
 B)False

Exam 48: Genetics and Heredity

What is meant when a trait is classified as sex-linked? Give an example of such a trait.

Which of the following diseases is carried by mitochondrial DNA?

Chorionic villus sampling is a newer procedure than amniocentesis.

A pedigree is a chart that illustrates genetic relationships in a family over several generations.

Which of the following is not a type of RNA?

The principle of independent assortment states that:

If a mother is homozygous for normal skin color and the father is albino, none of their offspring will be albino.

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

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

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

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

A person with heterozygous sex chromosomes is a female.

In determining blood type, type A and type B are codominant to the recessive O type. If one parent had type A blood and one parent had type B blood, they could not have a child with type O blood.

Sickle cell inheritance is a good example of how codominance works.

Transcriptomics is the analysis of all the mRNA codes actually transcribed from the human genome.

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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