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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Definitions:

Vasopressin

A hormone produced by the hypothalamus and secreted by the posterior pituitary gland, playing a key role in increasing water retention in the kidneys and in regulating social behaviors.

Avpr1a Gene

A gene associated with social behavior patterns, particularly in the regulation of monogamy and partner preference in certain species.

Genetic Basis

The underlying genetic makeup responsible for the development of specific traits or behaviors within organisms.

Behavioral Polyphenism

The phenomenon where different behaviors are exhibited by the same species in response to environmental conditions, without genetic differentiation.