How Can a Mutation in a Tumor-Suppressor Gene Behave as a Recessive

question 13

Multiple Choice

How can a mutation in a tumor-suppressor gene behave as a recessive allele at the cellular level, but appear as a dominant allele in pedigree analysis?

• A)Some functional protein can still be produced in a cell heterozygous for a loss-of-function allele; however, an additional mutation can inactivate the second allele, eliminating all functional protein allowing cancer to occur in many family members.
• B)A single functional allele is sufficient to regulate the cell cycle, but not sufficient to promote apoptosis, allowing cancer to develop in every generation.
• C)A cell with half the amount of the functional tumor-suppressor protein can form benign tumors that will occur in every generation in the pedigree.
• D)Some functional protein can still be produced in a cell heterozygous for a loss-of-function allele; but loss-of-function tumor-suppressor alleles are so common in the population that many individuals are homozygous.

Acknowledge the importance of gathering information as the first step in planning persuasive messages.

Understand methods of increasing perceived value and decreasing perceived cost in marketing.

Recognize the importance of credibility and legal compliance in promotional messages.

Understand anatomical directional terms and be able to apply them to different animals.

---

Definitions:

Price Ceiling

A government-imposed limit on how high a price can be charged on a product, aiming to keep essential goods affordable.

Quantity Demanded

The total amount of a good or service that consumers are willing to purchase at a given price over a specified period.

Quantity Supplied

The amount of a good that producers are willing and able to sell at a given price over a specified period.

Price Ceiling

A legal maximum price set by the government for certain goods or services, aimed at preventing prices from rising too high.