The Phage ϕX174 Can Tolerate Mutations in the Non-Structural Region

question 20

Multiple Choice

The phage ϕX174 can tolerate mutations in the non-structural region of its genome more easily than in the structural region of the genome.Which of the following explains why?

• A) Not all of the proteins coded in this region are packaged into the mature capsid.
• B) Single-stranded DNA is not as easily mutated as double-stranded DNA.
• C) Many of the non-structural proteins have more than one function.
• D) Some of the non-structural proteins are non-essential for virus replication.
• E) The presence of overlapping reading frames in this region of the genome.

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Definitions:

Panic Disorder

A mental health condition characterized by sudden and repeated episodes of intense fear or discomfort, known as panic attacks.

Hypervigilant

An enhanced state of sensory sensitivity accompanied by an exaggerated intensity of behaviors whose purpose is to detect threats.

Anxiety Attacks

Abrupt onset of intense fear or discomfort, where an individual may feel heart palpitations, dizziness, and panic, often without a clear trigger.

Major Depression

A psychiatric disorder characterized by persistent feelings of sadness, loss of interest, and a lack of pleasure in activities, severely impacting daily functioning.