A Researcher Found a Method She Could Use to Manipulate

question 20

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 using this procedure in Drosophila, she was readily successful in increasing phosphorylation of amino acids adjacent to methylated amino acids in histone tails. Which of the following results would she most likely see?

• A) increased chromatin condensation
• B) decreased chromatin condensation
• C) activation of histone tails for enzymatic function
• D) decreased binding of transcription factors
• E) inactivation of the selected genes

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