A Researcher Found a Method She Could Use to Manipulate

question 82

Multiple Choice

A researcher found a method she could use to manipulate and quantify phosphorylation and methylation in embryonic cells in culture.
-In one set of experiments she succeeded in decreasing methylation of histone tails. Which of the following results would she most likely see?

• A) increased chromatin condensation
• B) decreased chromatin condensation
• C) abnormalities of mouse embryos
• D) decreased binding of transcription factors
• E) inactivation of the selected genes

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Definitions:

Formal Operations

The final stage in Piaget's theory of cognitive development, starting around age 12, where individuals develop the ability to think abstractly, logically, and systematically.

Heart Defects

Abnormalities present at birth that affect the structure and function of the heart.

Rubella

A contagious viral infection known as German measles, characterized by a distinctive red rash, often mild in children but can cause serious congenital defects if contracted by pregnant women.

Syphilis

A sexually transmitted disease caused by the bacterium Treponema pallidum, characterized by distinct stages and potentially serious long-term consequences if untreated.