What Evidence Suggests That While the XIST Gene May Be

question 32

Multiple Choice

What evidence suggests that while the XIST gene may be required to initiate X chromosome inactivation, it may not be required to maintain it from one generation to another?

• A)Tumor cells do not maintain X chromosome inactivation from generation to generation.
• B)Some tumor cells in women contain inactivated X chromosomes whose XIST gene has been deleted.
• C)Some tumor cells in women contain inactivated X chromosomes whose XIST gene has been duplicated.
• D)Some women have patches of cells in their retinas that are color blind and others that are not.
• E)Some tumor cells in women have no X chromosomes.

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Definitions:

Critical Value

A threshold value in hypothesis testing used to determine whether to reject the null hypothesis, based on the observed statistic and the chosen significance level.

Null Hypothesis

A hypothesis that there is no significant difference or effect and serves as a default position until evidence suggests otherwise.

P-Value

The probability of observing results as extreme as those obtained during a statistical hypothesis test, assuming the null hypothesis is true.

Null Hypothesis

A statement used in hypothesis testing that indicates no effect or no difference, and it's the assumption that the experiment aims to test against.