Why Are Two "Hits" Required to Inactivate Tumor-Suppressor Genes

question 30

Multiple Choice

Why are two "hits" required to inactivate tumor-suppressor genes?

• A)Each allele must be altered, and each person has two copies, or alleles, of each gene, one from each parent.
• B)The first hit stops tissue growth, and the second hit is needed to cause abnormal tissue growth.
• C)Tumor-suppressor genes are larger than proto-oncogenes, requiring two hits to affect carcinogenesis.
• D)The first hit is insufficient to cause enough damage to cause a mutation.

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Definitions:

Vertical Axis

In graphing, the y-axis, which typically represents the dependent variable or the quantity being measured.

Utility Function

A mathematical representation that shows the relationship between an individual's consumption bundle and the level of satisfaction or utility derived from it.

Indifference Curves

Indifference curves are graphical representations used in microeconomics to demonstrate a consumer's preferences for various combinations of two goods, keeping satisfaction constant.

Horizontal Axis

A reference line on a graph or chart running left to right, typically used to represent the independent variable or basis of comparison.