Which One of the Following Statements MOST Accurately Describes Methylation

question 28

Multiple Choice

Which one of the following statements MOST accurately describes methylation?

• A)Methyl groups are most often added to cytosines adjacent to guanine bases in or near the promoter sequence, increasing the probability of gene expression.
• B)Methyl groups are most often added to cytosines adjacent to guanine bases in or near the promoter sequence, decreasing the probability of gene expression.
• C)Methyl groups are most often added to adenine-thymine base pairs because they are held by only two hydrogen bonds, and this increases the probability of gene expression.
• D)Methyl groups are most often added to guanine-cytosine base pairs because they are held by three hydrogen bonds, and this decreases the probability of gene expression.
• E)Methyl groups are added to most bases in the promoter region of a specific gene so that RNA polymerase and its associated proteins will bind more efficiently.

---

Definitions:

Type B Personality

Describes individuals characterized by a relaxed, patient, and easy-going nature, often contrasted with Type A personality traits.

Heart Attacks

A medical condition that occurs when the flow of oxygen-rich blood to a section of the heart is blocked, causing damage to the heart muscle.

Time Urgency

The feeling of pressure to complete tasks or make decisions within a limited timeframe, often contributing to stress.

Performance Decrements

A decrease or decline in the efficiency or quality of an individual's or group's work output.