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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Emerson

Ralph Waldo Emerson was a leading figure in the transcendentalist movement of the mid-19th century, known for his work as an American essayist, lecturer, philosopher, and poet.