A Trait Unique to Embryonic Stem Cells That Makes Them

question 15

Multiple Choice

A trait unique to embryonic stem cells that makes them useful for generating knockout animals is that they

• A)are totipotent.
• B)can be grown in culture.
• C)have been isolated from mice.
• D)are extremely well characterized at the molecular level.

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Definitions:

Independent Variables

Factors in an experiment that are manipulated or changed by the researcher to observe their effects on dependent variables.

Dependent Variable

In research, the variable that is being measured or tested to see how it is influenced by changes in another variable (the independent variable).

Correlation Coefficients

Statistical measures that describe the size and direction of a relationship between two or more variables.

Double-Blind Procedure

A research experiment in which neither the participants nor the experimenters know who is receiving a particular treatment, minimizing the risk of bias.