Most Eukaryotic Cells Only Express 20-30% of the Genes They

question 16

Multiple Choice

Most eukaryotic cells only express 20-30% of the genes they possess.The formation of heterochromatin maintains the other genes in a transcriptionally silent (unexpressed) state.Which histone modification is associated with the formation of the most common type of heterochromatin?

• A)H3 lysine 4 methylation
• B)H3 lysine 9 methylation
• C)H3 lysine 14 methylation
• D)H3 lysine 27 methylation

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Definitions:

Levator Muscle

A group of muscles used in the body for various functions including lifting, such as the Levator ani in the pelvis.

Part

A section or portion of something that is separate from the whole.

Connective Tissues

Types of tissue in the body that maintain the form of organs and provide cohesion and internal support.

Muscles

Tissues in the body that contract to produce movement or maintain the position of parts of the body.