The Genetics of Sickle Cell Anemia

A gene is a:

• segment of DNA that codes for a protein

• type of cell in the body

• kind of virus

• form of carbohydrate

Hemoglobin is a protein found in:

• blood

• muscles

• bones

• skin

How is a sickled blood cell different from a normal one?

• A sickled blood cell is round and flexible, while a normal one is crescent-shaped and rigid.

• A sickled blood cell is crescent-shaped and rigid, while a normal one is round and flexible.

• A sickled blood cell is larger and more flexible than a normal one.

• A sickled blood cell has more hemoglobin than a normal one.

The blood cells are the wrong shape because:

• they are infected by a virus

• they lack sufficient hemoglobin

• they are misshapen due to a genetic disorder

• they are exposed to high levels of radiation

What are the symptoms of sickle cell anemia?

• Fatigue, pain, and infections

• High blood pressure and cholesterol

• Increased appetite and weight gain

• Improved vision and hearing

A carrier is:

• a type of vehicle used for transportation

• a person or thing that carries something

• a company that provides communication services

• all of the above

In order to make a protein, the message on DNA must be converted to what?

• mRNA

• tRNA

• rRNA

• DNA polymerase

How many bases in DNA are needed to code for a single amino acid?

• 1

• 2

• 3

• 4

What is a protein?

• A macromolecule composed of amino acids

• A type of carbohydrate

• A form of lipid

• A simple sugar

What base is found in RNA, but not DNA?

• Uracil

• Thymine

• Cytosine

• Adenine