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:

Melodrama

A dramatic or theatrical genre that emphasizes emotion and sensational dramatic plots, often featuring stereotypical characters and moral polarization.

Melodrama

A dramatic genre emphasizing exaggerated emotions, stereotypical characters, and interpersonal conflicts, often appealing to the audience's sense of sympathy and moral virtue.

Production Code

A set of industry moral guidelines that was applied to most United States motion pictures released by major studios from 1934 to 1968.

First Amendment

This is the amendment to the United States Constitution that guarantees freedoms concerning religion, expression, assembly, and the right to petition.