A Few Decades Ago, Knudsen and Colleagues Proposed a Theory

question 26

Multiple Choice

A few decades ago, Knudsen and colleagues proposed a theory that, for a normal cell to become a cancer cell, a minimum of two genetic changes had to occur in that cell. Knudsen was studying retinoblastoma, a childhood cancer of the eye.
-In colorectal cancer, several genes must be mutated in order to make a cell a cancer cell, supporting Knudsen's hypothesis. Which of the following kinds of genes would you expect to be mutated?

• A) genes coding for enzymes that act in the colon
• B) genes involved in control of the cell cycle
• C) genes that are especially susceptible to mutation
• D) the same genes that Knudsen identified as associated with retinoblastoma
• E) the genes of the bacteria that are abundant in the colon

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Definitions:

Occupational Scales

Measures that assess an individual's interests, skills, and aptitudes in relation to specific occupations or professions.

Basic Interest Scales

Tools used in career counseling to measure an individual's interests in various activities or occupational fields.

Personal Style Scales

Assessment tools designed to measure individual differences in personality, preferences, and tendencies.

Basic Interest Scales

Tools used to measure an individual's preferences and interests in various occupational, educational, and leisure activities.